A method and device for digital architectural design

Abstract

This invention discloses a method and device for digital architectural design. The key technical features include: a housing with a lifting port on its top surface, a display screen mounted on the top surface of the housing, an upper fixed frame fixedly mounted on the top surface of the display screen, a lower fixed frame fixedly mounted on the bottom surface of the display screen, and a connecting block fixedly mounted on one side of the lower fixed frame; and a cleaning component located inside the housing for cleaning the display screen. By using the cleaning block, when the display screen is retracted into the housing, a second drive motor starts, and the output shaft drives a second lead screw to rotate. The rotational motion of the second lead screw is converted into the linear reciprocating motion of a moving plate, which moves synchronously with the moving plate and slides on the display screen surface to wipe and clean it. The moving plate drives the cleaning block to complete its full stroke, ensuring no dead corners on the screen surface and avoiding screen damage or incomplete cleaning caused by uneven force during manual wiping.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, and more specifically to a method and equipment for digital building design. Background Technology

[0002] Architectural design refers to the process by which designers, before construction begins, comprehensively envision and formulate solutions to potential problems during construction and use, based on the construction tasks. This is expressed in drawings and documents, ensuring the entire project proceeds smoothly and in a unified manner within the predetermined investment limit and according to the well-considered plan. This also ensures the completed building fully meets the various requirements and uses expected by users and society. Furthermore, this digital presentation facilitates the smooth progress of the entire project within the predetermined investment limit and according to the well-considered plan. The digital display screen at the main entrance of the construction project can update cost control milestones and plan adjustment details in real time, allowing all parties to keep track of the project's progress and avoid information discrepancies. The digital promotion at the main entrance of the construction project concretizes these expectations in advance: by simulating post-construction usage scenarios, such as the flow of customers in commercial spaces and the layout of supporting facilities in residential communities, users can perceive the building's value in advance, and the project's design concept and social contribution are conveyed to society, further expanding the project's influence.

[0003] At the main entrance of a construction project, a crucial window connecting the project to the outside world, traditional display methods struggle to capture the attention of passersby in a short time, let alone effectively convey the core highlights of the architectural design and the project's advantages. They fail to meet the modern construction industry's urgent need for efficient, accurate, and vivid displays; the emergence of digital displays has become an inevitable trend of the times.

[0004] Existing display screens are mostly installed directly on multimedia display stands, which has some shortcomings. For example, when wiping manually, uneven wiping force can easily occur due to differences in individual habits and pressure control. Excessive force in some areas may scratch the anti-glare coating or tempered glass film on the display screen, resulting in scratches that affect the clarity of the display details of the architectural design model. This is especially true for architectural design schemes that require high-precision display of lines and material textures; scratches will seriously interfere with the visual effect, not only weakening the professionalism of the digital promotion of the main entrance of the construction project, but also making it difficult for passers-by and potential owners to accurately perceive the project's design highlights through the display screen, thus affecting the promotional and display value of digital architectural design in the main entrance scene of the construction project. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method and device for digital building design, solving the problems mentioned in the background section.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A method and device for digital architectural design includes: a housing with a lifting port on its top surface, a display screen on the top surface of the housing, an upper fixed frame fixedly mounted on the top surface of the display screen, a lower fixed frame fixedly mounted on the bottom surface of the display screen, a connecting block fixedly mounted on one side of the lower fixed frame, a first lead screw rotatably mounted inside the housing and threadedly connected to the connecting block, two guide blocks fixedly mounted on one side of the lower fixed frame, two guide rods fixedly mounted on the top surface inside the housing and movably sleeved with the guide blocks, a hand crank rotatably mounted on one side of the housing, a drive gear fixedly connected to one end of the hand crank, a drive port on one side of the housing, and a connecting gear fixedly sleeved on the outside of the first lead screw, the drive gear meshing with the connecting gear; and a cleaning component disposed on one side inside the housing for cleaning the display screen.

[0007] By adopting the above technical solution and setting a first lead screw, when the display screen needs to be stored, the hand crank is turned to drive the drive gear to rotate. The drive gear meshes with the connecting gear of the first lead screw through the drive port on the side of the housing, transmitting power to the first lead screw, causing the first lead screw to rotate inside the housing. Using the lead screw transmission principle, the connecting block and the display screen are driven to descend smoothly along the guide rod, realizing the storage of the display screen. The mechanical transmission structure is stable and reliable, and is suitable for complex construction site environments.

[0008] Preferably, the cleaning component includes: The second lead screw is rotatably mounted on one side of the housing. A movable plate is threadedly connected to the external side of the second lead screw. A cleaning block is fixedly mounted on one side of the movable plate. A hand-cranked drive rod is rotatably mounted on one side of the housing. A connection hole is provided on one side of the housing. One end of the hand-cranked drive rod is fixedly connected to the second lead screw.

[0009] By adopting the above technical solution and setting up a cleaning block, after the display screen is stored in the cabinet, rotating the hand-cranked drive rod directly drives the second lead screw to rotate through the connecting hole. The rotational motion of the second lead screw is converted into the linear reciprocating motion of the moving plate. The cleaning block moves synchronously with the moving plate, sliding on the display screen surface to achieve wiping and cleaning. The moving plate drives the cleaning block to complete its full stroke, ensuring that there are no dead corners for cleaning the screen surface; moreover, the lead screw transmission speed is uniform, and the pressure of the cleaning block is stable, completely avoiding screen damage or incomplete cleaning caused by uneven force during manual wiping. At the same time, the mechanical drive structure does not rely on electricity, making it suitable for scenarios with unstable temporary power supply on construction sites.

[0010] Preferably, the cleaning component further includes: The groove is located inside one side of the box body. Several conveying holes are provided inside the groove. A nozzle is fixedly installed inside the conveying hole. One end of the nozzle is fixedly connected to a spray pipe. One end of the spray pipe is provided with a converging pipe. A liquid storage tank is fixedly installed on one side of the box body. The liquid storage tank is connected to the converging pipe. A manual piston pump is provided outside the converging pipe.

[0011] By adopting the above technical solution and setting up nozzles, when deep cleaning of the display screen is required, manually pressing the manual piston pump forces the special cleaning fluid from the reservoir into the converging pipe. The fluid is then distributed to various nozzles, and delivered through the nozzles to the delivery holes in a groove on one side of the housing. Finally, it is evenly sprayed onto the display screen surface by the nozzles. After spraying, rotating the hand-cranked drive lever drives the second lead screw to rotate, causing the moving plate and cleaning block to slide on the display screen surface. The cleaning fluid decomposes stains through chemical action, and combined with the mechanical wiping of the cleaning block, the cleaning effect is greatly improved. The mechanical pump body has a simple and durable structure with low maintenance costs.

[0012] Preferably, a water-absorbing roller is rotatably mounted on one side of the movable plate.

[0013] By adopting the above technical solution and setting up a water-absorbing roller, when the cleaning component sprays cleaning liquid and is wiped by the cleaning block, the water-absorbing roller can roll closely following the cleaning block to quickly absorb the residual cleaning liquid on the surface of the display screen, preventing the liquid from seeping into the equipment along the edge of the screen, preventing mechanical parts from getting damp or corroded, and ensuring the long-term stable operation of the equipment.

[0014] Preferably, an extrusion block is fixedly installed on one side of the inside of the groove.

[0015] By adopting the above technical solution, and by setting up the squeezing block, when the moving plate drives the water-absorbing roller to complete the water absorption operation and returns to its original position with the moving plate, the squeezing block will contact the surface of the water-absorbing roller and generate squeezing. Under the drive of the moving plate, the water-absorbing roller rolls past the squeezing block, and the squeezing block can squeeze out the water absorbed by the water-absorbing roller, so that the water-absorbing roller can quickly return to a dry state, ensuring that it can still maintain efficient water absorption performance during the next cleaning, and avoiding the reduction of drying effect due to saturation of the water-absorbing roller.

[0016] Preferably, a waste liquid recovery tank is provided on the bottom surface of the groove, and a recovery box is fixedly installed on one side of the box body, and the recovery box is connected to the waste liquid recovery tank.

[0017] By adopting the above technical solution and setting up a recycling bin, when the squeezing block squeezes the water-absorbing roller to discharge water, the waste liquid will flow into the waste liquid recycling tank at the bottom of the groove, and be collected into the recycling bin through the connecting structure. The recycling bin can temporarily store the waste liquid, which is convenient for regular centralized treatment, reducing the waste of cleaning liquid and environmental pollution, and meeting the environmental protection requirements of construction sites.

[0018] Preferably, a brush is provided on one side of the movable plate.

[0019] By adopting the above technical solution and setting up a brush, when the cleaning block comes into contact with the display screen, the brush first sweeps away the fine dust, fiber debris and other impurities adsorbed by static electricity on the surface of the display screen, clearing obstacles for the subsequent deep wiping of the cleaning block, improving the overall cleaning effect, and preventing dust particles from scratching the screen during the wiping process.

[0020] Preferably, two limiting holes are provided on one side of the movable plate, and two limiting rods are fixedly installed on one side of the inside of the box, with the limiting rods movably sleeved together with the limiting holes.

[0021] By adopting the above technical solution and setting a limiting rod, a guiding constraint is formed on the moving plate, which can effectively limit the shaking or deviation of the moving plate when it moves with the second lead screw, ensuring that the cleaning block, brush and water absorption roller are always in stable contact with the surface of the display screen, thus ensuring the stability of the cleaning process and the uniformity of the cleaning effect. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the movable plate structure of the present invention; Figure 3 This is a schematic diagram of the lower fixing frame structure of the present invention; Figure 4 This is a schematic diagram of the nozzle structure of the present invention; Figure 5 This is a schematic diagram of the extrusion block structure of the present invention; Figure 6This is a schematic diagram of the cleaning block structure of the present invention.

[0023] Reference numerals: 1. Housing; 2. Lifting port; 3. Display screen; 4. Upper fixed frame; 5. Lower fixed frame; 6. Connecting block; 7. First lead screw; 8. Drive gear; 9. Drive port; 10. Hand crank; 11. Connecting gear; 12. Guide block; 13. Guide rod; 14. Second lead screw; 15. Moving plate; 16. Cleaning block; 17. Hand crank drive rod; 18. Connecting hole; 19. Groove; 20. Conveying hole; 21. Nozzle; 22. Spray pipe; 23. Liquid storage tank; 24. Converging pipe; 25. Manual piston pump; 26. Absorption roller; 27. Squeezing block; 28. Waste liquid recovery tank; 29. ​​Recovery box; 30. Brush; 31. Limiting hole; 32. Limiting rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] refer to Figures 1-6 A method and device for digital architectural design includes: a housing 1, a lifting port 2 on the top surface of the housing 1, a display screen 3 on the top surface of the housing 1, an upper fixing frame 4 fixedly installed on the top surface of the display screen 3, a lower fixing frame 5 fixedly installed on the bottom surface of the display screen 3, a connecting block 6 fixedly installed on one side of the lower fixing frame 5, a first lead screw 7 rotatably installed inside the housing 1, the first lead screw 7 being threadedly connected to the connecting block 6, two guide blocks 12 fixedly installed on one side of the lower fixing frame 5, two guide rods 13 fixedly installed on the top surface inside the housing 1, the guide rods 13 being movably sleeved with the guide blocks 12, a hand crank 10 rotatably installed on one side of the housing 1, a drive gear 8 fixedly connected to one end of the hand crank 10, a drive port 9 on one side of the housing 1, a connecting gear 11 fixedly sleeved on the outside of the first lead screw 7, the drive gear 8 meshing with the connecting gear 11; and a cleaning component, the cleaning component being disposed on one side inside the housing 1 for cleaning the display screen 3. By setting the first lead screw 7, when the display screen 3 needs to be stored, the hand crank 10 is turned to drive the drive gear 8 to rotate. The drive gear 8 meshes with the connecting gear 11 of the first lead screw 7 through the drive port 9 on the side of the housing 1, transmitting power to the first lead screw 7, causing the first lead screw 7 to rotate inside the housing 1. Using the lead screw transmission principle, the connecting block 6 and the display screen 3 are driven to descend smoothly along the guide rod 13, realizing the storage of the display screen. The mechanical transmission structure is stable and reliable, and is suitable for complex construction site environments.

[0026] As a further embodiment of the present invention, the cleaning assembly includes: a second lead screw 14, which is rotatably mounted on one side of the housing 1, a movable plate 15 is externally threaded to the second lead screw 14, a cleaning block 16 is fixedly mounted on one side of the movable plate 15, a hand crank drive rod 17 is rotatably mounted on one side of the housing 1, a connection hole 18 is provided on one side of the housing 1, and one end of the hand crank drive rod 17 is fixedly connected to the second lead screw 14. By setting up the cleaning block 16, after the display screen 3 is stored inside the housing 1, rotating the hand crank drive rod 17 directly drives the second lead screw 14 to rotate through the connecting hole 18. The rotational motion of the second lead screw 14 is converted into the linear reciprocating motion of the moving plate 15. The cleaning block 16 moves synchronously with the moving plate 15, sliding on the surface of the display screen 3 to achieve wiping and cleaning. The moving plate 15 drives the cleaning block 16 to complete its full stroke, ensuring that there are no dead corners on the screen surface. Moreover, the lead screw transmission speed is uniform, and the pressure of the cleaning block 16 is stable, completely avoiding screen damage or incomplete cleaning caused by uneven force during manual wiping. At the same time, the mechanical drive structure does not rely on electricity, making it suitable for scenarios with unstable temporary power supply on construction sites.

[0027] As a further embodiment of the present invention, the cleaning component further includes: a groove 19, which is formed inside one side of the housing 1. A plurality of conveying holes 20 are formed inside one side of the groove 19. A nozzle 21 is fixedly installed inside the conveying hole 20. One end of the nozzle 21 is fixedly connected to a spray pipe 22. One end of the spray pipe 22 is provided with a converging pipe 24. A liquid storage tank 23 is fixedly installed on one side of the housing 1. The liquid storage tank 23 is connected to the converging pipe 24. A manual piston pump 25 is provided outside the converging pipe 24. By setting nozzles 21, when the display screen at the main entrance of the construction project accumulates stubborn stains due to long-term exposure, affecting the display of digital content of the architectural design, the manual piston pump 25 is manually pressed to pump the special cleaning fluid from the storage tank 23 into the converging pipe 24. The fluid is then distributed to each spray pipe 22, and delivered through the spray pipes 22 to the delivery holes 20 in the groove 19 on one side of the housing 1. Finally, the nozzles 21 evenly spray the cleaning fluid onto the surface of the display screen 3. After spraying, the hand crank 17 is turned to drive the second lead screw 14 to rotate, causing the moving plate 15 and cleaning block 16 to slide on the surface of the display screen 3. The cleaning fluid decomposes the stains through chemical action, and combined with the mechanical wiping of the cleaning block 16, it can deeply remove stain residue, allowing the display screen to quickly restore high-definition image quality. This ensures that the details of the architectural design scheme are not affected by stains during the digital promotion of the main entrance of the construction project, and always attracts the audience's attention with a professional image.

[0028] As a further embodiment of the present invention, a water-absorbing roller 26 is rotatably mounted on one side of the movable plate 15; By setting up the water-absorbing roller 26, when the cleaning component sprays cleaning liquid and wipes it through the cleaning block 16, the water-absorbing roller 26 can roll closely following the cleaning block 16 to quickly absorb the residual cleaning liquid on the surface of the display screen 3, preventing the liquid from seeping into the equipment along the edge of the screen, preventing mechanical parts from getting damp or corroded, and ensuring the long-term stable operation of the equipment.

[0029] As a further embodiment of the present invention, an extrusion block 27 is fixedly installed on one side of the inside of the groove 19; By setting up the squeezing block 27, in the humid and dusty environment of the main entrance of the construction project, water stains can easily cause the screen surface to become blurry or cause secondary pollution. When the moving plate 15 drives the water-absorbing roller 26 to complete the water absorption operation and returns to its original position with the moving plate 15, the squeezing block 27 will contact the surface of the water-absorbing roller 26 and generate squeezing. Under the drive of the moving plate 15, the water-absorbing roller 26 rolls past the squeezing block 27. The squeezing block 27 can squeeze out the water absorbed by the water-absorbing roller 26, so that the water-absorbing roller 26 can quickly return to a dry state, ensuring that it can still maintain efficient water absorption performance during the next cleaning and avoiding the reduction of drying effect due to saturation of the water-absorbing roller 26.

[0030] As a further embodiment of the present invention, a waste liquid recovery tank 28 is provided on the bottom surface of the groove 19, and a recovery box 29 is fixedly installed on one side of the box body 1, and the recovery box 29 is connected to the waste liquid recovery tank 28. By setting up a recycling bin 29, when the squeezing block 27 squeezes the water-absorbing roller 26 to discharge water, the waste liquid will flow into the waste liquid recycling tank 28 at the bottom of the groove 19, and be collected into the recycling bin 29 through the connecting structure. The recycling bin 29 can temporarily store the waste liquid, which is convenient for regular centralized treatment, reducing the waste of cleaning liquid and environmental pollution, and meeting the environmental protection requirements of the construction site.

[0031] As a further embodiment of the present invention, a brush 30 is provided on one side of the movable plate 15; By setting up the brush 30, when the cleaning block 16 contacts the display screen 3, the brush 30 first sweeps away the fine dust, fiber debris and other impurities adsorbed by static electricity on the surface of the display screen 3, clearing obstacles for the subsequent deep wiping of the cleaning block 16, improving the overall cleaning effect and preventing dust particles from scratching the screen during the wiping process.

[0032] As a further embodiment of the present invention, two limiting holes 31 are provided on one side of the movable plate 15, and two limiting rods 32 are fixedly installed on one side of the inner side of the box body 1. The limiting rods 32 are movably sleeved together with the limiting holes 31. By setting the limiting rod 32, a guiding constraint is formed on the moving plate 15, which can effectively limit the shaking or deviation of the moving plate 15 when it moves with the second lead screw 14, ensuring that the cleaning block 16, brush 30 and water absorption roller 26 are always stably attached to the surface of the display screen 3, ensuring the stability of the cleaning process and the uniformity of the cleaning effect. The display screen without cleaning dead corners can fully present the overall project design (such as the overall building appearance and community supporting layout), avoiding the loss of information display due to inadequate local cleaning, and ensuring that the audience obtains complete project design information.

[0033] Working principle: Please refer to Figures 1-6 As shown, when it is necessary to showcase the project's design highlights to passersby and potential owners, the hand crank 10 is turned, causing the drive gear 8 to rotate. The drive gear 8 meshes with the connecting gear 11 outside the first lead screw 7 through the drive port 9 on the side of the housing 1, transmitting power to the first lead screw 7. This causes the first lead screw 7 to rotate inside the housing 1, and the rotation of the first lead screw 7 is converted into the linear upward motion of the connecting block 6. This causes the display screen 3 to extend out of the housing 1 from the lifting port 2 along the guide rod 13 until it reaches the preset height. The mechanical transmission is smooth and controllable, allowing for rapid response to temporary promotional needs at the main entrance of the construction project, such as when customers visit or when nearby residents are interested. It quickly presents digital content such as architectural exterior details and internal spatial layout. When not in use, the hand crank 10 is turned in the opposite direction, causing the drive gear 8 to mesh with the connecting gear 11 in the opposite direction. The first lead screw 7 rotates in the opposite direction, and the connecting block 6 causes the display screen 3 to descend along the guide rod 13. Finally, it is completely stored inside the housing 1 through the lifting port 2, preventing dust and construction debris at the main entrance of the construction project from damaging the screen and ensuring the long-term high-definition display of the building's digital design content.

[0034] After the display screen 3 is stored in the cabinet, the cleaning assembly is activated: First, manually press the manual piston pump 25 to deliver the cleaning solution in the reservoir 23 through the converging pipe 24 and the spray pipe 22 to the nozzle 21 in the groove 19, and spray it evenly onto the surface of the display screen 3 through the delivery hole 20; then turn the hand crank drive rod 17 to drive the second lead screw 14 to rotate, and the moving plate 15, which is threaded to the second lead screw 14, moves linearly along the limiting rod 32 (guided by the limiting hole 31). The brush 30 on one side of the moving plate 15 first contacts the surface of the display screen to sweep away the fine particles attracted by electrostatic electricity. Dust and fiber debris are removed; then the cleaning block 16 slides against the screen, thoroughly mixing the cleaning solution with the stains before wiping them clean; the water-absorbing roller 26 behind the cleaning block 16 rolls along, absorbing any remaining cleaning solution; when the moving plate 15 returns to the groove 19, the water-absorbing roller 26 contacts the squeezing block 27, and is squeezed out of the water during rolling, restoring the device to a dry state for the next use; the waste liquid generated by squeezing flows into the waste liquid recovery tank 28 at the bottom of the groove 19, and is collected through the connecting structure to the recovery box 29 on one side of the box 1 for temporary storage, facilitating regular centralized treatment and preventing contamination of the equipment's interior.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method and device for digital architectural design, characterized in that, include: The box (1) has a lifting port (2) on its top surface. A display screen (3) is installed on the top surface of the box (1). An upper fixing frame (4) is fixedly installed on the top surface of the display screen (3). A lower fixing frame (5) is fixedly installed on the bottom surface of the display screen (3). A connecting block (6) is fixedly installed on one side of the lower fixing frame (5). A first lead screw (7) is rotatably installed inside the box (1). The first lead screw (7) is threadedly connected to the connecting block (6). A connecting block (6) is fixedly installed on one side of the lower fixing frame (5). Two guide blocks (12) are provided. Two guide rods (13) are fixedly installed on the inner top surface of the housing (1). The guide rods (13) are movably sleeved together with the guide blocks (12). A first drive motor (10) is fixedly installed on one side of the housing (1). A drive gear (8) is fixedly connected to the shaft of the first drive motor (10). A drive port (9) is opened on one side of the housing (1). A connecting gear (11) is fixedly sleeved on the outside of the first lead screw (7). The drive gear (8) meshes with the connecting gear (11). A cleaning component is disposed on one side inside the housing (1) for cleaning the display screen (3).

2. The method and equipment for digital architectural design according to claim 1, characterized in that, The cleaning assembly includes: a second lead screw (14), which is rotatably mounted on one side of the housing (1), and a movable plate (15) is threadedly connected to the outside of the second lead screw (14). A cleaning block (16) is fixedly mounted on one side of the movable plate (15), and a second drive motor (17) is fixedly mounted on one side of the housing (1). A connection hole (18) is provided on one side of the housing (1), and the shaft of the second drive motor (17) is fixedly connected to the second lead screw (14).

3. The method and equipment for digital architectural design according to claim 2, characterized in that, The cleaning component further includes: a groove (19), which is located inside one side of the housing (1). A plurality of conveying holes (20) are provided inside one side of the groove (19). A nozzle (21) is fixedly installed inside the conveying hole (20). A spray pipe (22) is fixedly connected to one end of the nozzle (21). A converging pipe (24) is provided at one end of the spray pipe (22). A liquid storage tank (23) is fixedly installed on one side of the housing (1). The liquid storage tank (23) is connected to the converging pipe (24). A peristaltic pump (25) is provided outside the converging pipe (24).

4. The method and equipment for digital architectural design according to claim 3, characterized in that, A water-absorbing roller (26) is rotatably mounted on one side of the movable plate (15).

5. The method and equipment for digital architectural design according to claim 4, characterized in that, An extrusion block (27) is fixedly installed on one side of the inside of the groove (19).

6. The method and equipment for digital architectural design according to claim 5, characterized in that, The bottom surface of the groove (19) is provided with a waste liquid recycling tank (28), and a recycling box (29) is fixedly installed on one side of the box body (1). The recycling box (29) is connected to the waste liquid recycling tank (28).

7. The method and equipment for digital architectural design according to claim 2, characterized in that, A brush (30) is provided on one side of the movable plate (15).

8. The method and equipment for digital architectural design according to claim 2, characterized in that, Two limiting holes (31) are provided on one side of the movable plate (15), and two limiting rods (32) are fixedly installed on one side of the inner side of the box (1). The limiting rods (32) are movably sleeved together with the limiting holes (31).

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