Height-adjustable folding lamp holder and working method thereof

Abstract

The invention relates to the technical field of rail transit vehicle manufacturing auxiliary equipment, in particular to a height-adjustable folding lamp holder and a working method thereof. The folding lamp holder comprises a bearing frame, a rotating mechanism and a lamp set. The bearing frame comprises a cross beam and a liftable stand column. The cross beam is installed on the top of the stand column. The rotating mechanism comprises a rotating plate and a driving motor, the rotating plate is rotationally installed on the side face of the cross beam, and the driving motor is fixedly installed on the cross beam and can drive the rotating plate to rotate along the first rotating shaft; the lamp set is a foldable lamp belt and comprises a main lamp belt body and an auxiliary lamp belt body, the main lamp belt body is installed on the rotating plate, the auxiliary lamp belt body is rotatably installed at the end of the main lamp belt body along a second rotating shaft, and the second rotating shaft is perpendicular to the first rotating shaft. According to the invention, the actual operation illumination condition of a vehicle can be simulated, the quality detection efficiency of key components such as a middle roof plate is improved, the space utilization rate is optimized, flexible deployment in various scenes is facilitated, and the portability and practicability of the lamp holder are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle manufacturing auxiliary equipment, and in particular to a height-adjustable folding lamp stand and a working method thereof. Background Art

[0002] During the production and manufacturing process of standard EMUs, the lighting conditions in the existing construction environment are poor, and the interior lighting is not ideal. This situation directly aggravates the surface quality problems faced by the center top plate as a key component inside the vehicle. The surface quality problem of the center top plate is particularly prominent, and it has become a manufacturing problem that is difficult to effectively control. Specifically, these problems include but are not limited to details such as the unevenness of the center top plate surface, the unevenness of the ridges on both sides, and the repair marks left on the surface. Not only do they seriously affect the overall aesthetics of the vehicle and the passengers' riding experience, they also directly hinder the vehicle's first inspection pass rate, forcing the team to carry out a large amount of rework and repair work, thereby increasing the number of repair tasks and reducing production efficiency. In addition, the instability of the surface quality of the center top plate will trigger a chain reaction in subsequent processes, resulting in delays in production progress, further exacerbating the intensity of production tasks.

[0003] Current standard EMU production lines generally use fixed lighting. This system cannot be adjusted in height or angle, and cannot accurately replicate the dynamic lighting environment of a train in operation (such as the incident angle and brightness distribution of a striped light source at a specific height). As a result, defects such as uneven top plate surfaces, distorted edges, and repair marks are difficult to detect during the static production phase, often remaining unnoticed until the train is powered on, missing the optimal opportunity for repair. Furthermore, this approach only considers light source design, without designing the lighting structure specifically for the standard EMU construction environment. This also fails to consider space optimization and utilization, making deployment in confined or mobile environments difficult. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the purpose of the embodiments of the present invention is to provide an adjustable height folding lamp stand to simulate the actual operating lighting conditions of the vehicle, improve the quality inspection efficiency of key components such as the middle roof plate, optimize space utilization, facilitate flexible deployment in various scenarios, and improve the portability and practicality of the lamp stand.

[0005] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A foldable lamp stand with adjustable height, comprising: a supporting frame, a rotating mechanism and a lamp group; the supporting frame comprises a crossbeam and a liftable column, the crossbeam being mounted on the top of the column; the rotating mechanism comprises a rotating plate and a driving motor, the rotating plate being rotatably mounted on the side of the crossbeam, the driving motor being fixedly mounted on the crossbeam and capable of driving the rotating plate to rotate along a first rotating axis; the lamp group is a foldable lamp strip, comprising a main light strip and a secondary light strip, the main light strip being mounted on the rotating plate, the secondary light strip being rotatably mounted on the end of the main light strip along a second rotating axis, and the second rotating axis being perpendicular to the first rotating axis.

[0007] In another embodiment, the foldable light strip includes at least three light strips, of which one is a main light strip and the rest are auxiliary light strips, and the auxiliary light strips are installed at the left and right ends of the main light strip.

[0008] In another embodiment, one end of the main light strip is rotatably connected to a secondary light strip through a first rotating assembly, and the other end of the main light strip is rotatably connected to another secondary light strip through a second rotating assembly, and the first rotating assembly and the second rotating assembly are installed in a reversed manner in the vertical direction.

[0009] In another embodiment, the first rotating assembly includes a first rotating rod, a first fixed seat and a third fixed seat, the first fixed seat is installed at the first end of the main light strip, the third fixed seat is installed on the first auxiliary light strip on the left, the third fixed seat is rotatably connected to the first fixed seat through the first rotating rod, and the third fixed seat can move axially upward relative to the first rotating rod; the second rotating assembly includes a second rotating rod, a second fixed seat and a fourth fixed seat, the second fixed seat is installed at the second end of the main light strip, the fourth fixed seat is installed on the second auxiliary light strip on the right, the fourth fixed seat is rotatably connected to the second fixed seat through the second rotating rod, and the fourth fixed seat can move axially downward relative to the second rotating rod.

[0010] In another embodiment, the light strip is a planar stripe light source, including an LED light source module, a light guide plate, a diffuser and a grating. The LED light source module is located at the bottom of the light strip, the light guide plate is tightly attached to the top of the LED light source module, the diffuser is located above the light guide plate, and the grating is located above the diffuser.

[0011] In another embodiment, the rotating mechanism also includes a support seat, which is fixed to the side of the beam and has a circular hole. Both ends of the rotating plate have cylinders, one end of the cylinder is rotatably installed in the circular hole of the support seat, and the other end of the cylinder is connected to the drive motor through a coupling.

[0012] In another embodiment, the column includes two groups of telescopic rods arranged in a vertical direction, and the two groups of telescopic rods are connected by a fixing frame. The fixing frame is a cross structure, and the two ends of the fixing frame are respectively connected to the sides of the two groups of telescopic rods.

[0013] In another embodiment, the support frame further includes a bottom plate, the bottom of the telescopic rod is mounted on the bottom plate, and a fixed base is further mounted between the bottom side of the telescopic rod and the top surface of the bottom plate.

[0014] In another embodiment, a self-locking wheel is installed on the lower side of the base plate, and the self-locking wheel is located at the bottom of the two telescopic rods.

[0015] An embodiment of the present invention further provides a method for operating the height-adjustable foldable lamp stand as described above, comprising:

[0016] Adjust the height of the light group through the telescopic rod to match the target lighting position;

[0017] The rotating plate is driven by a driving motor to rotate, thereby driving the entire lamp assembly fixed on the rotating plate to rotate around the first rotating axis to adjust the illumination angle of the lamp assembly;

[0018] The main light strip and the auxiliary light strip of the light group are rotated relative to each other around the second rotation axis by rotating the component, so that the light group can be switched between the folded state and the unfolded state.

[0019] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0020] 1. In the height-adjustable folding lamp stand of the present invention, the supporting frame is composed of a crossbeam and a liftable column. The crossbeam is installed on the top of the column. The height of the crossbeam can be adjusted by the liftable column, so that the lamp group can better adapt to different height requirements. The rotating mechanism contains a rotating plate and a driving motor. The rotating plate is rotatably installed on the side of the crossbeam. The driving motor is fixed on the crossbeam and drives the rotating plate to rotate around the first rotation axis, so that the lamp group can rotate in all directions to enrich the lighting angle. The lamp group is a foldable light strip, which consists of a main light strip and a sub-light strip. The main light strip is installed on the rotating plate, and the sub-light strip is rotatably installed on the end of the main light strip along the second rotation axis and is perpendicular to the first rotation axis, so that the main and sub-light strips can be folded or unfolded, which is conducive to use in different space scenes, and is also convenient for storage and transportation, thereby improving the flexibility and practicality of the lamp stand. The lifting and lowering of the lamp group and the adjustment of its angle are achieved through the liftable column and rotating mechanism, thereby simulating the lighting conditions during actual vehicle operation, providing ideal lighting conditions for quality inspection of the middle roof. Combined with the foldable lamp group, space utilization is optimized to meet the limited space on the construction site and the diversity of the working environment. It is convenient for flexible deployment in small or mobile environments, and improves the portability and practicality of the lamp stand.

[0021] 2. The folding between the light strips can achieve same-side lighting, and can also achieve two-side lighting. When lighting on the same side, the auxiliary light strip can be located on the same plane as the main light strip. The auxiliary light strips at both ends can also be bent toward the main light strip to form a trapezoidal lighting form, thereby meeting different application scenarios.

[0022] 3. When the light strips are illuminated on the same side, the auxiliary light strips at both ends can be bent toward the main light strip to form a trapezoidal lighting form. This is suitable for scenarios that require concentrated light, enhanced illumination of specific areas (especially corners, seams, and edges), or changing the angle of incidence to highlight specific types of defects. For example: inspection of the edge ridges and seams of the middle roof, local repair work lighting, and inspection of narrow spaces such as equipment compartments and above electrical cabinets. When the light group is illuminated on both sides, it is suitable for scenarios that require large-scale, uniform coverage of both sides of the interior of the car. For example, daily inspections, initial screening of large-area defects, and simulation of actual operating lighting.

[0023] 4. Multifunctional integration and adjustment function: It integrates the two functions of daily lighting and mid-top plate quality diagnosis into one, realizing dual free adjustment of height and angle to ensure that the lighting intensity is accurately matched with task requirements.

[0024] 5. The use of a planar stripe light source design significantly improves light distribution within the illuminated area, perfectly simulating the lighting conditions of a train in operation. It also greatly enhances the light's ability to penetrate and identify subtle defects. During the quality inspection of key components such as the roof panel of an EMU, even the tiniest flaws can be clearly captured, making the quality inspection process smoother and the results more reliable, thus safeguarding product quality.

[0025] 6. By integrating efficient lighting with precise inspection capabilities, the lighting adjustment process is simplified, reducing operational delays and errors. Optimizing the lighting environment reduces the difficulty and cost of quality inspection and improves the first-time pass rate of products.

[0026] Additional advantages of the present invention will be given in the description which follows, and in part will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in this application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. In addition, the spacing or size between components is exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0028] Figure 1is a schematic diagram of a height-adjustable foldable lamp stand provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a lamp assembly provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of a main light strip provided by an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the coordination between the main light strip and the auxiliary light strips on both sides provided by an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of a first rotating assembly and a second rotating assembly provided in an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of a rotating mechanism provided by an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of a carrier provided by an embodiment of the present invention;

[0035] In the figure: 1. Light assembly; 11. Main light strip; 12. Auxiliary light strip; 13. First rotating rod; 14. First fixing base; 15. Second fixing base; 16. Second rotating rod; 17. Third fixing base; 18. Fourth fixing base; 2. Rotating mechanism; 21. Drive motor; 22. Coupling; 23. Rotating plate; 24. Support base; 3. Carrying frame; 31. Crossbeam; 32. Column; 33. Fixed base; 34. Bottom plate; 35. Self-locking wheel; 36. Fixing frame; DETAILED DESCRIPTION

[0036] It should be noted that the following detailed description is illustrative and is intended to further illustrate the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Example 1

[0038] This embodiment proposes an adjustable height folding lamp stand that integrates multi-functions, height and brightness adjustment, unique planar stripe light source design, space optimization and folding design to meet the complex and changing lighting needs in the production of standard EMUs and improve quality inspection efficiency and product quality.

[0039] like Figure 1 As shown, the height-adjustable folding lamp stand comprises: a carrier frame 3, a rotating mechanism 2 and a lamp assembly 1; Figure 7As shown, the carrier 3 includes a crossbeam 31 and a liftable column 32, and the crossbeam 31 is installed on the top of the column 32; Figure 6 As shown, the rotating mechanism 2 includes a rotating plate 23 and a driving motor 21. The rotating plate 23 is rotatably mounted on the side of the beam 31. The driving motor 21 is fixedly mounted on the beam 31 and can drive the rotating plate 23 to rotate along the first rotating axis. Figure 2 As shown, the light group 1 is a foldable light strip, including a main light strip 11 and a sub-light strip 12. The main light strip 11 is installed on the rotating plate 23, and the sub-light strip 12 is installed on the end of the main light strip 11 along a second rotating axis, and the second rotating axis is perpendicular to the first rotating axis.

[0040] The carrier frame 3 comprises a crossbeam 31 and liftable columns 32, forming a basic support framework. The crossbeam 31 provides a mounting platform for the light assembly 1, while the columns 32 enable vertical height adjustment. The drive motor 21 in the rotating mechanism 2 drives the rotating plate 23 about a first axis, enabling the light assembly 1 to adjust the illumination angle within the horizontal plane. The light assembly 1 comprises a main light strip 11 and a secondary light strip 12, which rotates around a second axis perpendicular to the first, creating a three-dimensional folding freedom. Height and horizontal rotation adjustments accurately simulate the actual illumination angle of a vehicle. The bidirectional axis design allows for efficient folding, adapting to confined working environments.

[0041] The main body of beam 31 is made of high-strength aluminum alloy, which has excellent mechanical properties and corrosion resistance, and can reduce the overall weight while ensuring structural strength.

[0042] The foldable light strip includes at least three light strips, of which one is a main light strip 11 and the others are auxiliary light strips 12 . The auxiliary light strips 12 are installed at the left and right ends of the main light strip 11 .

[0043] The multiple light strips design expands the illumination range to meet the lighting needs of different areas within the carriage. This embodiment utilizes a one-main, two-sub design. The main light strip 11 is centered to provide basic illumination, while the two sub-light strips 12 on each side can be independently adjusted to achieve multiple operating modes: fully extended to cover a large inspection area, folded on one side to focus on a specific area, and folded on both sides to create a compact configuration. The symmetrical layout of the sub-light strips 12 matches the horizontal extension of the EMU's roof, enhancing the uniformity and flexibility of the lighting effect, better adapting to complex environments and diverse lighting tasks.

[0044] like Figure 3 、 Figure 4 As shown, one end of the main light strip 11 is rotatably connected to a secondary light strip 12 through a first rotating assembly, and the other end of the main light strip 11 is rotatably connected to another secondary light strip 12 through a second rotating assembly. The first rotating assembly and the second rotating assembly are installed in a reversed manner in the vertical direction.

[0045] The first rotating assembly and the second rotating assembly are installed in a reverse manner in the vertical direction (such as Figure 3 As shown, the left rotating rod is higher than the main light strip 11, and the right rotating rod is lower than the main light strip 11). When the auxiliary light strip 12 is folded toward the main light strip 11, the left auxiliary light strip 12 first moves upward and then flips, and the right auxiliary light strip 12 first moves downward and then flips, forming a stepped storage structure.

[0046] The light strip can not only be folded horizontally, but the auxiliary light strips 12 at both ends can also be raised and lowered longitudinally. By swapping the first rotating assembly and the second rotating assembly, the main light strip 11 and the auxiliary light strip 12 can be staggered folded in the vertical direction, avoiding interference between the light strips during folding, making the folding more thorough and saving more space.

[0047] Furthermore, the folded light strips can avoid blocking each other's light source, achieving dual-sided illumination of light group 1. This is suitable for scenarios requiring wide-area, uniform coverage of both sides of the vehicle interior, such as daily inspections, initial screening of large-area defects, and simulating actual operating lighting.

[0048] When lighting on the same side, the auxiliary light strips 12 at both ends can be bent toward the main light strip 11, forming a trapezoidal lighting pattern. This is suitable for scenarios that require concentrated light, enhanced illumination in specific areas (especially corners, seams, and edges), or changing the angle of incidence to highlight specific types of defects. Examples include inspection of roof edge ridges and seams, local repair work lighting, and inspection in narrow spaces such as equipment compartments and above electrical cabinets.

[0049] like Figure 3 、 Figure 4 As shown, the first rotating assembly includes a first rotating rod 13, a first fixed seat 14 and a third fixed seat 17, the first fixed seat 14 is installed at the first end of the main light strip 11, and the third fixed seat 17 is installed on the first auxiliary light strip 12 on the left, the third fixed seat 17 is rotatably connected to the first fixed seat 14 through the first rotating rod 13, and the third fixed seat 17 can move axially upward relative to the first rotating rod 13; the second rotating assembly includes a second rotating rod 16, a second fixed seat 15 and a fourth fixed seat 18, the second fixed seat 15 is installed at the second end of the main light strip 11, the fourth fixed seat 18 is installed on the second auxiliary light strip 12 on the right, the fourth fixed seat 18 is rotatably connected to the second fixed seat 15 through the second rotating rod 16, and the fourth fixed seat 18 can move axially downward relative to the second rotating rod 16.

[0050] The coordination between the rotating rod and the fixed seat provides a certain degree of damping, thus enabling arbitrary angle positioning. The third fixed seat 17 can move axially upward along the first rotating rod 13, and the fourth fixed seat 18 can move axially downward along the second rotating rod 16. This axial freedom of movement and the rotational freedom form a composite motion mechanism. During the folding process, the auxiliary light strip 12 first slightly moves axially before rotating. This design provides the auxiliary light strip 12 with longitudinal freedom of movement during rotation, allowing the light strip to better adapt to changes in space during folding or unfolding, further enhancing the flexibility and adaptability of the light stand.

[0051] The light strip is a planar stripe light source, including LED light source module, light guide plate, diffuser and grating. The arrangement order and method of LED light source module, light guide plate, diffuser and grating are crucial to achieving the uniformity of light source, the clarity of stripes and the overall optical performance.

[0052] The LED light source module is located at the bottom of the entire light source system and serves as the light source. The LEDs are arranged linearly. A light guide plate (LGP) sits just above the LED light source module, evenly distributing the light emitted by the LEDs across the entire light source surface. Utilizing the principle of light scattering, a linear or point light source is converted into a surface light source. A diffuser, located above the LGP, further diffuses the light, making it more uniform and reducing brightness unevenness and glare. PET (polyethylene terephthalate) is the primary material. PET is widely used for its high light transmittance, excellent mechanical properties, and weather resistance. A diffusion layer made of a transparent resin mixed with a light-diffusing material is applied to the surface and interior of the diffuser. This ensures that light undergoes multiple refractions, reflections, and scatterings as it passes through, achieving an optical diffusion effect. The grating, located above the diffuser, is a key component in forming the planar stripes. The grating's periodic structure causes interference and diffraction of the passing light, resulting in alternating light and dark stripes on the light source surface. Stacked Arrangement: The aforementioned components are stacked in the order of LED light source module, light guide plate, diffuser, and grating, with each layer tightly fitted to ensure effective light transmission and diffusion. Modular Design: The entire light source system is divided into multiple modules, each containing a complete combination of LED light source, light guide plate, diffuser, and grating. The modular design facilitates assembly, maintenance, and upgrades. Heat dissipation considerations: LED light sources generate heat during operation, affecting their stability and lifespan. Therefore, heat dissipation devices such as heat dissipation structures or fans are installed around the light source modules to ensure effective heat dissipation.

[0053] like Figure 6 As shown, the rotating mechanism 2 also includes a support seat 24, which is fixed to the side of the beam 31. The support seat 24 has a circular hole. Both ends of the rotating plate 23 have cylinders. One end of the cylinder is rotatably installed in the circular hole of the support seat 24, and the other end of the cylinder is connected to the drive motor 21 through a coupling 22.

[0054] Support base 24 is fixed to the side of crossbeam 31 and is provided with a circular hole. Rotating plate 23 has cylinders at both ends. One end of the cylinder fits into the circular hole of support base 24 for rotational mounting, while the other end is connected to drive motor 21 via coupling 22. Support base 24 provides stable support for rotating plate 23, ensuring its balance during rotation. This mounting arrangement also allows for smoother rotation of rotating plate 23, reducing shaking and jerking during rotation, and improving the reliability and service life of rotating mechanism 2.

[0055] The dual-point support structure of support base 24 eliminates the risk of cantilever deformation of rotating plate 23. Coupling 22 compensates for installation errors between the motor shaft and the cylindrical structure of rotating plate 23, ensuring smooth rotation. Self-lubricating bearings (such as those made of polytetrafluoroethylene composite materials) embedded in the circular hole reduce friction loss, extending the life of rotating mechanism 2 to over 100,000 cycles.

[0056] Furthermore, to prevent the lamp assembly 1 from colliding with surrounding objects or damaging the train structure during rotation, a limit switch protection device can be installed on the rotating mechanism 2. When an abnormality is detected, the movement of the rotating mechanism 2 can be stopped in time and an alarm signal can be issued.

[0057] like Figure 7 As shown, the column 32 includes two groups of telescopic rods arranged in the vertical direction, and the two groups of telescopic rods are connected by a fixing frame 36. The fixing frame 36 is a cross structure, and the two ends of the fixing frame 36 are respectively connected to the sides of the two groups of telescopic rods.

[0058] This structure provides excellent vertical adjustability for the uprights 32, allowing for flexible adjustment of the height of the light assembly 1 based on actual needs. The cross-shaped mounting bracket 36, with its ends connected to the sides of the two retractable rods, enhances the structural stability of the uprights 32, preventing the rods from bending or deforming during extension and retraction. This ensures the uprights 32's load-bearing capacity and stability at various heights, providing a secure support for the light assembly 1.

[0059] The main body of Column 32 is constructed from high-strength aluminum alloy. Column 32 features a hollow structure, housing an integrated linear guide system and electrical control components. This hollow design not only reduces Column 32's weight but also provides ample space for the electrical wiring and drive system, ensuring a compact and functional structure.

[0060] The linear guide rail inside the column 32 adopts a ball guide rail to ensure that the beam 31 (lamp group 1) can move steadily and smoothly when sliding up and down without shaking or jamming.

[0061] The power source is a stepper motor, characterized by high precision, high reliability, and easy control. The motor's gear transmission system enables precise up and down sliding control. The motor control unit is integrated into the bottom of the column 32, making it easy to maintain and inspect.

[0062] In addition, to prevent the crossbeam 31 from exceeding the preset range or colliding during the lifting process, a limit switch protection device can also be set inside the column 32. When an abnormal situation is detected, the system will automatically stop running and issue an alarm signal to ensure the safety of operation.

[0063] The bottom of column 32 is equipped with a set of intuitive and easy-to-use control buttons, which facilitate users to operate functions such as brightness adjustment and extension and retraction of light group 1.

[0064] The 32-post design also supports remote control and communication, allowing users to connect to a central control system or other smart devices via wired or wireless means. This allows users to monitor and operate the gantry in real time from a remote location, improving work convenience and efficiency.

[0065] The support frame 3 further includes a bottom plate 34 , the bottom of the telescopic rod is mounted on the bottom plate 34 , and a fixed base 33 is mounted between the bottom side of the telescopic rod and the top surface of the bottom plate 34 .

[0066] The base plate 34 serves as the foundational support structure for the entire light stand, bearing the weight of the upper structure and external loads. The fixed base 33 further strengthens the connection between the telescopic rod and the base plate 34, enhancing the stability and anti-overturning capability of the entire light stand, ensuring the light stand remains stable during use and providing reliable protection for high-quality lighting.

[0067] The fixed base 33 is made of high-strength aluminum alloy as the main material. The bottom of the fixed base 33 should be covered with an anti-skid pad or adopt an anti-skid design to increase the friction with the installation surface and prevent sliding or tipping during use.

[0068] The base design focuses on stability to ensure that the base can withstand external loads such as the upper structure of the lamp stand and wind.

[0069] The fixed base 33 is a triangular structure, and the bottom of the telescopic rod can be connected to the bottom plate 34 by welding or bolts. This design disperses the supporting stress and increases the anti-overturning moment of the lamp stand by more than 2 times.

[0070] A self-locking wheel 35 is installed on the lower side of the bottom plate 34, and the self-locking wheel 35 is located at the bottom of the two telescopic rods.

[0071] Self-locking wheels 35 facilitate movement and positioning of the lamp stand, allowing it to be flexibly relocated within the vehicle according to construction needs. Furthermore, the self-locking function locks the lamp stand in a designated position, preventing movement during operation and ensuring stable lighting. Furthermore, the self-locking wheels 35 are strategically positioned at the base of the two telescopic rods, effectively distributing the lamp stand's weight and reducing pressure on the base plate 34, thereby extending its service life.

[0072] Implementation of working principle 1, used for daily lighting:

[0073] The lamp group 1 is tightly attached to the surface of the rotating plate 23 by strong glue to ensure a stable connection between the two. The rod body of the telescopic rod is equipped with a control button, which is seamlessly connected to the surface of the telescopic rod through an embedded installation method. The user can adjust the lighting parameters through manual operation. The lamp group 1 has three levels of light brightness adjustment to adapt to the different lighting needs in the car. A rotating component (similar to a hinge structure) is installed at the intersection edge of the two lamp groups 1. The rotating component is fixed to the connecting plate on the back of the lamp group 1 by screws to achieve flexible turning between the lamp groups 1, making it easy to move the lamp group 1 into the car to achieve daily lighting functions.

[0074] Implementation of working principle 2, used as lighting for roof quality inspection:

[0075] A telescopic rod is installed at the lower part of the crossbeam 31 by welding, and the telescopic rod is used to adjust the height of the lamp group 1. When the lighting for the quality inspection of the middle top plate is carried out, the telescopic rod is raised to the designed highest point by controlling the button. The designed highest point is consistent with the height of the lighting system in actual operation, which significantly reduces the distance between the lamp group 1 and the middle top plate, making it easier to achieve uniform lighting of the middle top plate. The output shaft of the driving motor 21 is connected to the rotating plate 23, and the rotating plate 23 is driven by the driving motor 21 to rotate, thereby driving the lamp group 1 installed thereon to rotate synchronously. After the angle of the lamp group 1 is changed, the light can directly irradiate the middle top plate. By lifting and lowering the lamp group 1, adjusting the angle and irradiating the plane stripe light source, the lighting conditions during actual operation of the vehicle are simulated, providing ideal lighting conditions for the quality inspection of the middle top plate.

[0076] In summary, to address the complex lighting requirements in standard EMU production, a multifunctional, height-adjustable, foldable light stand has been designed. It not only integrates three levels of brightness and multiple height adjustments to ensure precise matching of lighting intensity to task requirements, providing construction workers with an inspection environment that emulates real-world working conditions, but also utilizes a planar stripe light source design for more uniform light distribution and easier identification of subtle defects, significantly simplifying quality inspections of key components like the center roof. Furthermore, the light stand prioritizes space optimization and energy efficiency, with a foldable design for easy mobility. This design not only improves lighting efficiency and adaptability, but also achieves the dual goals of energy conservation and emission reduction while ensuring efficient production.

[0077] Example 2

[0078] This embodiment provides a method for operating the height-adjustable foldable lamp stand as described in Embodiment 1, comprising:

[0079] Adjust the height of the light set 1 by using the telescopic rod to match the target lighting position;

[0080] The rotating plate 23 is driven to rotate by the driving motor 21, thereby driving the lamp assembly 1 fixed on the rotating plate 23 to rotate around the first rotation axis as a whole, so as to adjust the illumination angle of the lamp assembly 1;

[0081] The main light strip 11 and the auxiliary light strip 12 of the light set 1 are rotated relative to each other around the second rotation axis by rotating the assembly, so that the light set 1 can be switched between the folded state and the unfolded state.

[0082] The telescopic rod adjusts the height of the light assembly 1 to match the target lighting position, allowing the height to be adjusted according to actual needs to ensure lighting coverage. The drive motor 21 drives the rotating plate 23 to rotate, and the light assembly 1 rotates as a whole about the first axis, adjusting to the appropriate illumination angle and achieving multi-angle lighting. The rotating assembly enables the main light strip 11 and the auxiliary light strip 12 to rotate relative to each other about the second axis, switching the light assembly 1 between the folded and unfolded states. The shape of the light assembly 1 can be flexibly adjusted according to space and lighting requirements to meet the lighting needs of various scenarios. This working method fully utilizes the adjustability and folding function of the light stand, enhancing the flexibility and adaptability of the lighting, and meeting the lighting needs of different working conditions.

[0083] The double-side lighting of lamp group 1 is suitable for scenes that require wide and uniform coverage of both sides of the interior of the vehicle. For example:

[0084] ① Daily inspection and initial screening of large-area defects: Quickly inspect the roof and side wall panels of the entire carriage to check for obvious dents, protrusions, large-area stains or installation defects.

[0085] ② Simulating actual operating lighting: The light fixture height is adjusted to align with the position of the overhead lighting during actual train operation. Using the characteristics of a planar stripe light source, the lighting conditions (including light angle, intensity distribution, and stripe effect) received by the center ceiling and surrounding areas from the perspective of passengers and crew during daytime or nighttime operation are accurately simulated. This makes it possible to detect subtle surface irregularities, abnormal reflections, or assembly gaps during the static production phase that only become apparent under dynamic operating lighting.

[0086] When the light strips are illuminated on the same side, the auxiliary light strips 12 at both ends can be bent toward the main light strip 11 to form a trapezoidal lighting form, which is suitable for scenes that require concentrating light, enhancing the illumination of specific areas (especially corners, seams, and edges), or changing the incident angle to highlight specific types of defects.

[0087] For example:

[0088] ① Inspection of the edges and seams of the center roof: The bent secondary light strip 12 projects light more concentratedly onto the seams between the center roof and the side and end wall panels, as well as the longitudinal and transverse edges of the center roof itself. This sideways or obliquely incident light significantly enhances the ability to reveal issues such as uneven edges, misaligned joints or uneven gaps, and repair marks (especially at the edges of polished areas), creating stronger shadow or highlight contrast, making it easier for the naked eye or visual system to detect.

[0089] ② Local repair work lighting: When workers need to perform detailed repairs on a specific location on the top plate (such as a dent or scratch), they can move the light stand above that point and bend the auxiliary light strip 12 to form a small, high-brightness "spotlight" area to provide sufficient and unobstructed work lighting.

[0090] ③ Inspection in narrow spaces such as equipment compartments and above electrical cabinets: In areas where equipment is concentrated and space is limited in the carriage, the folded trapezoidal shape is more compact, making it easier to penetrate these spaces and effectively guide light to the top surface of the equipment that needs to be inspected or the surrounding ceiling area.

[0091] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A height-adjustable foldable lamp stand, characterized in that: include: Carrier, rotating mechanism and lamp assembly; The carrier frame includes a crossbeam and a liftable column, wherein the crossbeam is installed on the top of the column; The rotating mechanism includes a rotating plate and a driving motor, wherein the rotating plate is rotatably mounted on the side of the beam, and the driving motor is fixedly mounted on the beam and can drive the rotating plate to rotate along the first rotating axis; The light group is a foldable light strip, including a main light strip and a sub-light strip. The main light strip is installed on the rotating plate, and the sub-light strip is installed on the end of the main light strip along a second rotating axis, and the second rotating axis is perpendicular to the first rotating axis.

2. The height-adjustable foldable lamp stand according to claim 1, wherein: The foldable light strip includes at least three light strips, of which one is a main light strip and the others are auxiliary light strips, and the auxiliary light strips are installed at the left and right ends of the main light strip.

3. The height-adjustable foldable lamp stand according to claim 2, wherein: One end of the main light strip is rotatably connected to a secondary light strip via a first rotating assembly, and the other end of the main light strip is rotatably connected to another secondary light strip via a second rotating assembly. The first rotating assembly and the second rotating assembly are installed in a reversed manner in the vertical direction.

4. The height-adjustable foldable lamp stand according to claim 3, wherein: The first rotating assembly includes a first rotating rod, a first fixed seat and a third fixed seat, the first fixed seat is installed on the first end of the main light strip, the third fixed seat is installed on the first auxiliary light strip on the left, the third fixed seat is rotatably connected to the first fixed seat through the first rotating rod, and the third fixed seat can move axially upward relative to the first rotating rod; the second rotating assembly includes a second rotating rod, a second fixed seat and a fourth fixed seat, the second fixed seat is installed on the second end of the main light strip, the fourth fixed seat is installed on the second auxiliary light strip on the right, the fourth fixed seat is rotatably connected to the second fixed seat through the second rotating rod, and the fourth fixed seat can move axially downward relative to the second rotating rod.

5. The height-adjustable foldable lamp stand according to claim 1, wherein: The light strip is a planar stripe light source, including an LED light source module, a light guide plate, a diffuser and a grating. The LED light source module is located at the bottom of the light strip, the light guide plate is tightly attached to the top of the LED light source module, the diffuser is located above the light guide plate, and the grating is located above the diffuser.

6. The height-adjustable foldable lamp stand according to claim 1, wherein: The rotating mechanism also includes a support seat, which is fixed to the side of the beam and has a circular hole. Both ends of the rotating plate have cylinders, one end of the cylinder is rotatably installed in the circular hole of the support seat, and the other end of the cylinder is connected to the drive motor through a coupling.

7. The height-adjustable foldable lamp stand according to claim 1, wherein: The column includes two groups of telescopic rods arranged in a vertical direction. The two groups of telescopic rods are connected by a fixing frame. The fixing frame is a cross structure, and the two ends of the fixing frame are respectively connected to the sides of the two groups of telescopic rods.

8. The height-adjustable foldable lamp stand according to claim 7, wherein: The carrier frame further comprises a bottom plate, the bottom of the telescopic rod is mounted on the bottom plate, and a fixed base is mounted between the bottom side surface of the telescopic rod and the top surface of the bottom plate.

9. The height-adjustable foldable lamp stand according to claim 8, wherein: A self-locking wheel is installed on the lower side of the bottom plate, and the self-locking wheel is located at the bottom of the two telescopic rods.

10. A method for operating the height-adjustable foldable lamp stand according to any one of claims 1 to 9, characterized in that: include: Adjust the height of the light group through the telescopic rod to match the target lighting position; The rotating plate is driven by a driving motor to rotate, thereby driving the entire lamp assembly fixed on the rotating plate to rotate around the first rotating axis to adjust the illumination angle of the lamp assembly; The main light strip and the auxiliary light strip of the light group are rotated relative to each other around the second rotation axis by rotating the component, so that the light group can be switched between the folded state and the unfolded state.

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