Intelligent adjusting type radiographic image reading device and diffusion band tensioning system thereof

Abstract

The invention relates to the technical field of medical instruments, in particular to an intelligent adjusting type radiographic image reading device and a diffusion band tensioning system.The intelligent adjusting type radiographic image reading device comprises a main lamp box and an expansion lamp box, the main lamp box and the expansion lamp box are connected in a drawing type sliding mode, the main lamp box internally comprises a telescopic cavity and a driving cavity, and a driving assembly is arranged in the driving cavity; diffuse reflection grooves are formed in the main lamp box and the expansion lamp box, a lamp source assembly is arranged in the expansion lamp box, a diffusion assembly is arranged in the main lamp box, and a diffusion plate assembly is arranged in the telescopic cavity; symmetrical transmission assemblies are arranged on the driving assembly and fixedly connected with the lamp source assembly. The diffusion band tensioning system comprises a diffusion band adjusting unit and a plurality of adjusting plates; according to the invention, the telescopic lamp box structure is combined with a dynamic linkage adjustment mechanism of the diffusion band tensioning system, so that the light source distribution uniformity and diffusion angle adaptive optimization are ensured, and the problems of uneven brightness and reduced exposure efficiency of an expansion area caused by fixed size and multi-lamp-source design of a traditional device are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an intelligent adjustable radiographic image reading device and a diffusion belt tensioning system thereof. Background Art

[0002] Existing multi-unit film viewing light boxes, such as the MICARE Medical Film Viewing Light LED Cold Light Intelligent Quad, are designed as a fixed-length plate-like structure with cold-light LED light sources mounted on the sidewalls and diffused and guided by acrylic diffusers. Based on optimizations of existing products, Chinese Patent Publication No. CN118091963B discloses a radiology imaging reading device comprising a first light box, multiple electric cylinders fixed to the other side of the first light box, and a second light box slidably connected at both ends of the first light box. Compared to existing products, the light box designed in this document can be switched between an initial state and an expanded state, allowing the device to simultaneously hold multiple film films in the expanded state. It also reduces the space occupied in the initial state, allowing the film placement area to be adjusted according to the needs of medical staff.

[0003] Unlike fixed-area radiographic reading devices, adjustable radiographic reading devices require lighting adjustment during use due to changes in the viewing area. The radiographic reading devices proposed in the aforementioned literature utilize multiple light sources in separate zones. This design inevitably results in inconsistent lighting between the extended and fixed zones, creating a brightness difference. This results in varying film exposure in different zones, increasing user effort and reducing observation efficiency. Therefore, it is necessary to design an intelligent, adjustable radiographic reading device and its diffusion belt tensioning system to address these technical limitations. Summary of the Invention

[0004] To solve the above problems, the present invention provides an intelligent adjustable radiographic image reading device and its diffusion belt tensioning system. By combining a retractable light box structure with the dynamic linkage adjustment mechanism of the diffusion belt tensioning system, the uniformity of light source distribution and adaptive optimization of the diffusion angle are ensured, thereby solving the problems of uneven brightness and reduced exposure efficiency in the extended area caused by the fixed size and multi-light source design of traditional devices.

[0005] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: an intelligent adjustable radiographic image reading device, comprising a main light box and an extended light box, the main light box and the extended light box being connected in a drawer-type sliding manner, the main light box including, from top to bottom, a telescopic cavity and a drive cavity, the extended light box being located in the telescopic cavity, the drive cavity being provided with a drive assembly for driving the extended light box to extend and slide out, diffuse reflection grooves being provided on each edge of the main light box and the extended light box, a light source assembly for emitting horizontal light being provided in the extended light box, a diffuser assembly for diffusely reflecting light emitted by the light source assembly being provided in the main light box, and a diffuser plate assembly for adapting to the extended displacement of the extended light box and horizontally diffusing the diffusely reflected light being provided in the telescopic cavity;

[0006] A symmetrical transmission assembly is provided on the driving assembly, which is fixedly connected to the light source assembly. When the expansion box expands or contracts, the transmission assembly adjusts the position of the light source assembly according to the output power of the driving assembly, that is, the expansion or contraction degree of the expansion box.

[0007] The technical principle behind this solution is as follows: the main light box houses a telescopic cavity and a drive cavity. The extended light box slides along the telescopic cavity through mechanical transmission via the drive assembly, thereby changing the overall size of the device. The extended light box houses a built-in light source assembly that emits horizontal light. A diffuser assembly within the main light box evenly diffuses the light to the diffuser plate assembly, ensuring consistent light coverage and brightness in different extended states. The drive assembly and light source assembly are linked via a transmission assembly, adjusting the light source's position in real time based on the extended light box's displacement, ensuring that the light distribution matches the viewing area.

[0008] The above scheme has the following beneficial effects:

[0009] 1. This solution eliminates the brightness difference of multi-area light sources through the coordinated diffusion design of the main light box and the extension light box, ensures uniform light coverage before and after expansion, and reduces observation fatigue.

[0010] 2. In this solution, the linkage design of the drive component and the transmission component realizes automatic calibration of the light source position as the expansion displacement occurs, avoiding manual intervention and improving operational efficiency.

[0011] Furthermore, the drive assembly includes a drive box embedded in the bottom wall of the main light box, a servo motor is fixedly connected to the drive box by bolts, the output shaft of the servo motor extends into the drive cavity and is fixedly connected to an input gear, an output gear is engaged with one side of the input gear, a tooth groove is opened on the bottom surface of the extended light box, and the output gear is engaged in the tooth groove.

[0012] Beneficial effects: The drive component adopts a servo motor to drive the gear transmission system. The input gear and the output gear are engaged, and the expansion light box is driven to move through the tooth groove. Each gear transmission provides high-precision displacement control to ensure that the expansion speed and distance are adjustable to adapt to the needs of different scenarios and realize intelligent adjustment.

[0013] Furthermore, the diffuse reflection grooves each include a first diffuse reflection groove parallel to the sliding direction of the extended light box and a second diffuse reflection groove perpendicular to the sliding direction of the extended light box;

[0014] The diffusion assembly includes several diffusion belts and diffusion blocks. A symmetrical winding rod is fixedly connected to the inner wall of the main light box away from the extended light box. One end of the diffusion belt is fixedly connected to the inner wall of the extended light box away from the main light box, and the other end of the diffusion belt extends through the first diffusion groove of the extended light box and the first diffusion groove of the main light box and is respectively wound on the corresponding winding rod.

[0015] Beneficial effects: Parallel and vertical diffuse reflection grooves are set on the edges of the main light box and the extended light box. The diffuse belt is retracted and extended by the winding rod to cover the diffusion needs of the extended area. The diffuse belt and the groove body cooperate to enhance the uniformity of light scattering and avoid light faults or dark areas caused by expansion.

[0016] Furthermore, the diffuser plate assembly includes a first diffuser plate fixedly connected to the inner wall of one side of the main light box, and a second diffuser plate fixedly connected to the inner wall of the extended light box is slidably connected to the first diffuser plate. The first diffuser plate and the second diffuser plate are both made of acrylic material.

[0017] Beneficial effects: The design of the first diffuser plate and the second diffuser plate extends synchronously with the displacement of the extended light box. The acrylic material improves the light diffusion efficiency. The sliding structure ensures that the diffuser plate is seamlessly connected after expansion, maintaining the consistency of the overall lighting effect.

[0018] Furthermore, the light source assembly includes several fixed light sources and movable light sources. The fixed light sources are fixedly connected to the inner bottom walls of the main light box and the extended light box and are far away from each other. The movable light sources are symmetrically slidably connected to the inner bottom walls of the extended light sources.

[0019] Beneficial effects: The light source component includes a fixed light source and a mobile light source. The mobile light source adjusts its position as the expansion displacement occurs. The dynamic light source distribution adapts to different expansion states, avoiding local overbrightness or shadows and optimizing film exposure effects.

[0020] Furthermore, the plurality of fixed light sources and the movable light sources are all cylindrical structures, and the light emission points of the plurality of fixed light sources and the movable light sources are all arranged on the outer side walls of each circular structure.

[0021] Beneficial effects: The light source adopts a cylindrical structure, the light emission point is arranged on the outer wall, and the light is emitted parallel to the diffuser, reducing the direct stimulation of vertical light to the user's eyes, reducing visual fatigue, and improving the lateral diffusion efficiency.

[0022] Furthermore, the transmission components include a transmission gear meshed with the input gear, the transmission gear is fixedly connected to a rotating shaft, the rotating shaft is welded with a rotating tooth at one end away from the transmission gear, the rotating tooth is meshed with an annular rack, and the annular rack is fixedly connected to the corresponding mobile light source on the side away from the annular rack.

[0023] Beneficial effect: The engagement of the rotating gear and the annular rack converts the displacement drive of the extended light box into the position adjustment of the mobile light source, ensuring the precise matching of the light source movement and the extended displacement, and avoiding the brightness deviation caused by the offset of the light source.

[0024] Furthermore, the meshing transmission ratio between the annular rack and the rotating gear is smaller than the meshing transmission ratio between the input gear and the output gear.

[0025] Beneficial effect: The transmission ratio of the annular rack and the rotating teeth is smaller than the transmission ratio of the driving gear, so that the mobile light source can always be kept at the center line of the reading area, improving the diffusion uniformity of the mobile light source and making it evenly distributed on the entire reading surface.

[0026] An intelligent adjustable diffusion belt tensioning system operates based on the structure of the above-mentioned radiological image reading device and includes a diffusion belt adjustment unit and a plurality of adjustment plates;

[0027] The adjustment plates are symmetrically hinged in the first diffusion slots on both sides of the main light box, and the adjustment plates are respectively located between the corresponding diffusion belts and the inner side walls of the main light box or the extended light box;

[0028] The diffusion belt adjustment unit is used to adjust the inclination angle of the adjustment plate according to the sliding displacement of the expansion box to adjust the tension and diffusion angle of the diffusion belt.

[0029] The above scheme has the following beneficial effects:

[0030] 1. This solution utilizes a torsion spring on the take-up rod to store energy. When the expansion light box expands outward or contracts inward, the torsion spring automatically releases or retracts the diffusion tape through elastic deformation, adjusting the length of the diffusion tape in real time to keep it taut. This prevents loosening or wrinkling, ensuring that the diffusion tape remains in close contact with the light box surface and evenly diffuses light.

[0031] 2. The mechanical linkage between the drive rod and the annular rack converts the sliding displacement of the extended light box into a change in the tilt angle of the adjustment plate. During expansion, the drive rod pushes the adjustment plate toward the first diffuser; during contraction, it swings in the opposite direction, changing the diffusion angle of the diffuser and optimizing light coverage. This ensures that the diffused light intensity in the extended area is consistent with that in the main light box, eliminating brightness differences caused by the expansion.

[0032] Furthermore, the diffusion band adjustment unit includes a diffusion angle adjustment module and a tension adjustment module;

[0033] The tension adjustment module includes a plurality of torsion springs fixedly connected to the corresponding winding rods. The ends of the torsion springs away from the winding rods are fixedly connected to the corresponding diffusion belts. When the expansion light box expands or contracts, the torsion springs adjust the length of the diffusion belt by elastically storing and releasing elastic energy, thereby adjusting the tension of the diffusion belt.

[0034] The diffusion angle adjustment module includes several transmission rods, one end of which is hinged to the corresponding annular rack, and the end of the connecting rod away from the annular rack is hinged to the bottom of the corresponding adjustment plate. When the extended light box is expanded, the several transmission rods drive each adjustment plate to tilt and swing toward the direction close to the first diffusion plate. When the extended light box is retracted, the several transmission rods drive each adjustment plate to tilt and swing toward the direction away from the first diffusion plate.

[0035] Beneficial Effects: Synchronous adjustment of tension and diffusion angle ensures stable exposure in any extended state, avoiding user fatigue caused by uneven light or angle deviation, and significantly improving film reading efficiency.

[0036] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the intelligent adjustable radiographic image reading device and its diffusion belt tensioning system according to the present invention;

[0038] Figure 2 This is an axonometric diagram of the main light box in an embodiment of the intelligent adjustable radiographic image reading device and its diffusion belt tensioning system of the present invention;

[0039] Figure 3 Schematic diagram of the arrangement of the light source assembly and the diffuse reflection tank in an embodiment of the intelligent adjustable radiographic image reading device and its diffusion belt tensioning system of the present invention;

[0040] Figure 4 It is an overall isometric cross-sectional schematic diagram of an embodiment of the intelligent adjustable radiographic image reading device and its diffusion belt tensioning system according to the present invention;

[0041] Figure 5 The intelligent adjustable radiographic image reading device and its diffusion belt tensioning system embodiment of the present invention Figure 4 A magnified schematic diagram of point A in the middle;

[0042] Figure 6 The intelligent adjustable radiographic image reading device and its diffusion belt tensioning system embodiment of the present invention Figure 4 A magnified schematic diagram of point B in the middle;

[0043] Figure 7A schematic diagram of a diffusion plate assembly in an embodiment of the intelligent adjustable radiographic image reading device and its diffusion belt tensioning system according to the present invention;

[0044] Figure 8 This is a schematic diagram of the transmission rod when the expansion box is not expanded in an embodiment of the intelligent adjustable radiological image reading device and its diffusion belt tensioning system of the present invention.

[0045] The figure marks in the drawings of the specification include: 1. main light box; 101. telescopic cavity; 102. drive cavity; 2. extended light box; 3. drive box body; 4. input gear; 5. output gear; 6. tooth groove; 7. first diffusion groove; 8. second diffusion groove; 9. diffusion belt; 10. diffusion block; 11. winding rod; 12. first diffusion plate; 13. second diffusion plate; 14. fixed light source; 15. mobile light source; 16. transmission gear; 17. rotating gear; 18. ring rack; 19. adjustment plate; 20. torsion spring; 21. transmission rod. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] The following is further described in detail through specific implementation methods:

[0050] Example 1:

[0051] As attached Figure 1 and Figure 2 As shown, the intelligent adjustable radiological image reading device includes a main light box 1 and an extended light box 2. The main light box 1 is slidably connected to the extended light box 2. The main light box 1 includes a telescopic cavity 101 and a driving cavity 102 from top to bottom. The extended light box 2 is located in the telescopic cavity 101. The driving cavity 102 is provided with a driving component for driving the extended light box 2 to slide out. The driving component includes a driving box body 3 embedded in the bottom wall of the main light box 1. A servo motor is fixedly connected to the driving box body 3 by bolts. The output shaft of the servo motor extends to the driving cavity 102 and is welded with an input gear 4. An output gear 5 is engaged with one side of the input gear 4. A tooth groove 6 is provided on the bottom surface of the extended light box 2. The output gear 5 is engaged with the tooth groove 6. The forward drive and reverse drive of the servo motor can respectively drive the extended light box 2 to extend or retract into the main light box 1 through the output gear 5.

[0052] Combine Figure 1 、 Figure 3 and Figure 4 As shown, each edge of the main light box 1 and the extended light box 2 is provided with a diffuse reflection groove, and the diffuse reflection groove includes a first diffuse reflection groove 7 parallel to the sliding direction of the extended light box 2 and a second diffuse reflection groove 8 perpendicular to the sliding direction of the extended light box 2. The main light box 1 is provided with a diffuse component, which includes a plurality of diffuse belts 9 and diffuse blocks 10. Figure 6 As shown, a symmetrical winding rod 11 is welded on the inner wall of the main light box 1 away from the extended light box 2, and one end of the diffusion belt 9 is fixedly connected to the inner wall of the extended light box 2 away from the main light box 1 through a snap assembly, and the other end of the diffusion belt 9 extends through the first diffusion groove 7 of the extended light box 2 and the first diffusion groove 7 of the main light box 1 and is respectively wound on the corresponding winding rod 11.

[0053] like Figure 7 As shown, the main light box 1 is equipped with a diffuser assembly to accommodate the extended displacement of the extended light box 2 and horizontally diffuse the diffusely reflected light. This diffuser assembly includes a first diffuser 12 welded to the inner wall of one side of the main light box 1. Slidingly connected within the first diffuser 12 is a second diffuser 13 welded to the inner wall of the extended light box 2. Both the first and second diffusers 12, 13 are made of acrylic. This design allows the first and second diffusers 12, 13 to cover the film viewing area before and after expansion, ensuring optimal exposure for films placed on the main light box 1 and extended light box 2.

[0054] Based on the diffuse reflection mechanism of light, combined with Figure 3As shown, the extended light box 2 is provided with a light source assembly for emitting light to expose the film to be observed. The light source assembly includes a plurality of fixed light sources 14 and a movable light source 15. The fixed light sources 14 are fused to the inner bottom walls of the main light box 1 and the extended light box 2, respectively, and are separated from each other. The movable light sources 15 are symmetrically slidably connected to the inner bottom walls of the extended light sources. In particular, the fixed light sources 14 and the movable light sources 15 are both cylindrical structures and the light emission points of each light source are arranged on the outer side walls thereof. This design, on the one hand, makes the emission direction of the light parallel to the first diffuser 12 and the second diffuser 13. Compared to a vertical design, this design reduces eye damage to the user caused by light directly passing through the acrylic first and second diffusers 12, 13, which can lead to fatigue. Furthermore, this design ensures that light is always perpendicular to the diffusion bands and diffuser block 10. Due to non-ideal diffuse surfaces, the angle of incidence affects the distribution of scattered light. When light strikes the diffuse reflective surface perpendicularly, it enters directly and scatters more evenly. However, when light strikes the diffuse reflective surface at an angle, the light path along the surface becomes longer, potentially increasing or decreasing scattering in certain areas. This design ensures optimal exposure efficiency for diffuse reflective film reading.

[0055] The special thing is that, combined with Figure 4 and Figure 5 As shown, the input gear 4 is also engaged with a symmetrical transmission component for adjusting the diffuse reflection angle of light according to the displacement of the extended light box 2. The transmission components include a transmission gear 16 engaged with the input gear 4, and a rotating shaft is welded on the transmission gear 16. A rotating tooth 17 is welded on the end of the rotating shaft away from the transmission gear 16. The rotating teeth 17 are engaged with an annular rack 18. A limiting groove is provided on the bottom wall of the extended light box 2. The bottom of the annular rack 18 slides in the limiting groove. The side of the annular rack 18 away from the annular rack 18 is welded to the corresponding mobile light source 15. The meshing of the annular rack 18 and the rotating tooth 17 The transmission ratio is smaller than the meshing transmission ratio of the input gear 4 and the output gear 5. When the rotating gear 17 rotates following the transmission gear 16 under the action of the rotating shaft, the annular rack 18 is limited by the limiting groove and is driven by the rotation of the rotating gear 17 to move toward the direction close to the main light box 1. Through the design of the transmission ratio, there is a differential relative displacement between the annular rack 18 and the extended light box 2, so that the position of the mobile light source 15 is always maintained on the center line of the reading surface according to the expansion degree of the extended light box 2 (that is, the displacement distance of the extended light box 2), ensuring that the mobile light source 15 always exerts the best diffuse reflection.

[0056] Example 2:

[0057] Combine Figure 4 、 Figure 5 and Figure 6 As shown, based on the structure of the radiological image reading device described in Example 1, the diffusion belt tensioning system includes a diffusion belt adjustment unit and a plurality of adjustment plates 19 .

[0058] The adjustment plates 19 are symmetrically hinged in the first diffusion slots 7 on both sides of the main light box 1 . The adjustment plates 19 are respectively located between the corresponding diffusion belts and the inner side walls of the main light box 1 or the extended light box 2 .

[0059] Diffusion band adjustment unit The diffusion band adjustment unit includes a diffusion angle adjustment module and a tension adjustment module.

[0060] The tension adjustment module includes a plurality of torsion springs 20 fixedly connected to the corresponding winding rods 11. The ends of the torsion springs 20 away from the winding rods 11 are fixedly connected to the corresponding diffusion belts. When the extended light box 2 expands or contracts, the torsion springs 20 adjust the length of the diffusion belt by elastically storing and releasing elastic energy to adjust the tension of the diffusion belt. This design utilizes the elastic contraction function of the torsion springs 20 to store the diffusion belt. When the extended light box 2 extends out of the main light box 1 or is retracted into the main light box 1, the torsion springs 20 elastically adjust the length of the diffusion belt so that the diffusion belt always remains taut. The diffusion belts are all made of acrylic material. Therefore, the design of the diffusion belt following the extension and shortening of the extended light box 2 can ensure the light source diffusion effect and improve the light source diffusion quality of each first diffusion slot 7 (that is, the light source diffusion on the top and bottom sides of the main light box 1 along the extension direction of the extended light box 2). This ensures the exposure effect of the main light box 1 and the extended light box 2 on the surface film and ensures consistent film observation efficiency before and after expansion.

[0061] The diffusion angle adjustment module includes a plurality of transmission rods 21, one end of the transmission rods 21 is hinged to the corresponding annular rack 18, and the end of the transmission rods 21 away from the annular rack 18 is hinged to the bottom of the corresponding adjustment plate 19. When the expansion light box 2 is expanded, the plurality of transmission rods 21 drive each adjustment plate 19 to tilt and swing toward the direction close to the first diffusion plate 12. When the expansion light box 2 is retracted, the plurality of transmission rods 21 drive each adjustment plate 19 to tilt and swing away from the first diffusion plate 12. Figure 4 、 Figure 5 and Figure 8 As shown in the figure, the transmission rod 21 initially has an angle with the side wall of the main light box 1, and as the expansion box body expands, the transmission rod 21 gradually turns to be perpendicular to the side wall of the main light box 1. This design allows the adjustment plate 19 to gradually tilt and swing toward the direction close to the first diffuser plate 12 or the second diffuser plate 13 as the expansion box body expands. Each adjustment plate 19 will drive the telescopic belt on its surface to tilt and swing synchronously, so that the light after diffuse reflection by the telescopic belt can be more incident on the first diffuser plate 12 or the second diffuser plate 13, realizing the light diffuse reflection efficiency adjusted according to the expansion degree of the extended light box 2, so that the exposure efficiency of the extended light box 2 and the main light box 1 is positively correlated with the expansion degree, avoiding the impact of reduced exposure efficiency due to changes in the reading area, improving the user's observation efficiency, and reducing the probability of fatigue caused by observation difficulties.

[0062] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An intelligent adjustable radiographic image reading device, comprising a main light box (1) and an extension light box (2), wherein the main light box (1) and the extension light box (2) are connected in a drawable sliding manner, and characterized in that: The main light box (1) includes a telescopic cavity (101) and a driving cavity (102) from top to bottom. The extended light box (2) is located in the telescopic cavity (101). The driving cavity (102) is provided with a driving component for driving the extended light box (2) to extend and slide out. Each edge of the main light box (1) and the extended light box (2) is provided with a diffuse reflection groove. The extended light box (2) is provided with a light source component for emitting horizontal light. The main light box (1) is provided with a diffuser component for diffusely reflecting light emitted by the light source component. The telescopic cavity (101) is provided with a diffuser plate component for adapting to the extended displacement of the extended light box (2) and horizontally diffusing the diffusely reflected light. A symmetrical transmission assembly is provided on the driving assembly, which is fixedly connected to the light source assembly. When the expansion box expands or contracts, the transmission assembly adjusts the position of the light source assembly according to the output power of the driving assembly, that is, the expansion or contraction degree of the expansion box.

2. The intelligent adjustable radiographic image reading device according to claim 1, characterized in that: The driving assembly comprises a driving box (3) embedded in the bottom wall of the main light box (1); a servo motor is fixedly connected to the driving box (3) by bolts; an output shaft of the servo motor extends into a driving cavity (102) and is fixedly connected to an input gear (4); an output gear (5) is meshed with one side of the input gear (4); a tooth groove (6) is provided on the bottom surface of the extended light box (2), and the output gear (5) is meshed with the tooth groove (6).

3. The intelligent adjustable radiographic image reading device according to claim 2, characterized in that: The diffuse reflection grooves each include a first diffuse reflection groove (7) parallel to the sliding direction of the extended light box (2) and a second diffuse reflection groove (8) perpendicular to the sliding direction of the extended light box (2); The diffusion assembly comprises a plurality of diffusion strips (9) and diffusion blocks (10); a symmetrical tape reel rod (11) is fixedly connected to the inner wall of the main light box (1) on the side away from the extended light box (2); one end of the diffusion strip (9) is fixedly connected to the inner wall of the extended light box (2) on the side away from the main light box (1); the other end of the diffusion strip (9) extends through the first diffusion groove (7) of the extended light box (2) and the first diffusion groove (7) of the main light box (1) and is respectively wound on the corresponding tape reel rod (11).

4. The intelligent adjustable radiographic image reading device according to claim 3, characterized in that: The diffusion plate assembly comprises a first diffusion plate (12) fixedly connected to an inner wall of one side of a main light box (1), a second diffusion plate (13) fixedly connected to an inner wall of an extended light box (2) being slidably connected inside the first diffusion plate (12), and the first diffusion plate (12) and the second diffusion plate (13) are both made of acrylic material.

5. The intelligent adjustable radiographic image reading device according to claim 4, characterized in that: The light source assembly comprises a plurality of fixed light sources (14) and movable light sources (15). The fixed light sources (14) are fixedly connected to the inner bottom walls of the main light box (1) and the extended light box (2) at a distance from each other, and the movable light sources (15) are symmetrically slidably connected to the inner bottom walls of the extended light sources.

6. The intelligent adjustable radiographic image reading device according to claim 5, characterized in that: The plurality of fixed light sources (14) and the movable light sources (15) are all cylindrical structures, and the light emission points of the plurality of fixed light sources (14) and the movable light sources (15) are all arranged on the outer side walls of each circular structure.

7. The intelligent adjustable radiographic image reading device according to claim 6, characterized in that: The transmission components all include a transmission gear (16) meshed with the input gear (4), a rotating shaft is fixedly connected to the transmission gear (16), a rotating tooth (17) is welded to one end of the rotating shaft away from the transmission gear (16), the rotating tooth (17) is meshed with an annular rack (18), and the side of the annular rack (18) away from the annular rack (18) is fixedly connected to the corresponding mobile light source (15).

8. The intelligent adjustable radiographic image reading device according to claim 7, characterized in that: The meshing transmission ratio between the annular rack (18) and the rotating gear (17) is smaller than the meshing transmission ratio between the input gear (4) and the output gear (5).

9. An intelligent adjustable diffusion belt tensioning system, operating based on the structure of the intelligent adjustable radiographic image reading device according to any one of claims 1 to 8, characterized in that: It includes a diffusion belt adjustment unit and a plurality of adjustment plates (19); The adjustment plates (19) are symmetrically hinged in the first diffusion grooves (7) on both sides of the main light box (1), and the adjustment plates (19) are respectively located between the corresponding diffusion belts and the inner side walls of the main light box (1) or the extended light box (2); The diffusion belt adjustment unit is used to adjust the inclination angle of the adjustment plate (19) according to the sliding displacement of the expansion box, so as to adjust the tension and diffusion angle of the diffusion belt.

10. The diffusion belt tensioning system according to claim 9, characterized in that: The diffusion belt adjustment unit includes a diffusion angle adjustment module and a tension adjustment module; The tension adjustment module includes a plurality of torsion springs (20) fixedly connected to corresponding winding rods (11), and one end of the torsion springs (20) away from the winding rods (11) is fixedly connected to the corresponding diffusion belts. When the expansion light box (2) is expanded or contracted, the torsion springs (20) adjust the length of the diffusion belt by elastically storing and releasing elastic energy, thereby adjusting the tension of the diffusion belt. The diffusion angle adjustment module comprises a plurality of transmission rods (21), one end of each transmission rod (21) is hinged to a corresponding annular rack (18), and one end of each connecting rod away from the annular rack (18) is hinged to the bottom of a corresponding adjustment plate (19). When the extended light box (2) is extended, the plurality of transmission rods (21) drive each adjustment plate (19) to tilt and swing in a direction close to the first diffusion plate (12); when the extended light box (2) is retracted, the plurality of transmission rods (21) drive each adjustment plate (19) to tilt and swing in a direction away from the first diffusion plate (12).

Images