A large-format scanning device and method

Abstract

The application provides a large-format scanning device and method, which comprises a host computer, a shell and an operation table; the host computer comprises a support frame body, an industrial wide CIS linear array camera, a vertical height adjustment driving unit, a horizontal direction walking scanning driving unit and a walking unit; the vertical height of the industrial wide CIS linear array camera is adjusted through the vertical height adjustment driving unit; the horizontal direction walking scanning driving unit is used for driving the industrial wide CIS linear array camera to walk along the Y direction according to a specified speed, so as to complete fixed-width scanning. The application provides a large-format scanning device and method, which can complete automatic scanning of various formats of calligraphy and painting works, the scanning width can be customized, and the scanning length is not limited. The wide CIS linear array camera is used for scanning, the scanning is not affected by the environmental light source, the scanned image is not distorted and has high restoration degree. The height of the CIS linear array camera is adjustable, and is suitable for scanning of objects with different heights.

Description

Technical Field

[0001] This invention belongs to the field of digital scanning technology for calligraphy and painting works, specifically relating to a large-format scanning device and method. Background Technology

[0002] Digitizing calligraphy and painting works, especially ancient calligraphy and painting works, to create digital files allows for digital restoration and virtual exhibition of these works. This facilitates the promotion, dissemination, and secondary creation of these works, and plays a positive role in the management, preservation, and protection of cultural relics.

[0003] Painting and calligraphy works come in a variety of sizes. Commercial scanners can be used to scan small-format works, but area scan cameras are often used to scan large-format and extra-large-format works, which often encounters problems such as color distortion, insufficient resolution and image distortion. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a large-format scanning device and method that can effectively solve the aforementioned problems.

[0005] The technical solution adopted in this invention is as follows:

[0006] The present invention provides a large-format scanning device, including a main unit (1), a housing (2) and an operating table (3);

[0007] The outer casing (2) is fitted onto the outside of the main unit (1); the operating table (3) is installed on the outside of the outer casing (2);

[0008] The host (1) includes a support frame, an industrial wide-format CIS line scan camera (1.21), a vertical height adjustment drive unit, a horizontal walking and scanning drive unit, and a walking unit;

[0009] The walking units are symmetrically arranged on both sides of the support frame along the X direction, including a left walking unit (1.1) and a right walking unit (1.14), used to drive the entire large-format scanning device to move along the X direction; between the left walking unit (1.1) and the right walking unit (1.14), a horizontal walking scanning drive unit is arranged along the Y direction; the industrial wide-format CIS line scan camera (1.21) is arranged between the left walking unit (1.1) and the right walking unit (1.14), and is connected to the vertical height adjustment drive unit and the horizontal walking scanning drive unit respectively. The vertical height adjustment drive unit adjusts the vertical height of the industrial wide-format CIS line scan camera (1.21) to adapt to the scanning of objects of different heights; the horizontal walking scanning drive unit drives the industrial wide-format CIS line scan camera (1.21) to move along the Y direction at a specified speed to complete a fixed-width scan;

[0010] The operating platform (3) is connected to the industrial wide-format CIS line scan camera (1.21), the vertical height adjustment drive unit, the horizontal direction walking and scanning drive unit, and the walking unit, respectively.

[0011] Preferably, the left walking unit (1.1) and the right walking unit (1.14) have the same structure and are symmetrically arranged at the bottom of the support frame;

[0012] The left traveling unit (1.1) and the right traveling unit (1.14) are structured as follows: they include a traveling unit base beam (1.1.1), planetary reduction traveling wheels (1.1.2), a lifting beam (1.1.3), small universal wheels (1.1.4), a graphite copper sleeve (1.1.5), an optical axis fixing seat (1.1.6), an optical axis (1.1.7), an optical axis thrust ring (1.1.8), and a lower limit travel switch (1.1.9). Right-angle geared motor (1.1.10), worm gear jack (1.1.11), jack connecting plate (1.1.12), upper limit limit switch (1.1.13), limit switch mounting base (1.1.14), large universal wheel (1.1.15), travel wheel drive servo motor (1.1.16), coupling (1.1.17), geared motor mounting base (1.1.18), and motor base fixing beam (1.1.19);

[0013] The servo motor (1.1.16) driving the walking wheel is installed at the input end of the planetary reduction walking wheel (1.1.2). The planetary reduction walking wheel (1.1.2) has its own planetary reducer and is fixed to the front of the bottom beam (1.1.1) of the walking unit by screws. The large universal wheel (1.1.15) is fixed to the rear of the bottom beam (1.1.1) of the walking unit.

[0014] A small universal wheel (1.1.4) is fixed to each side of the lifting beam (1.1.3). The optical axis fixing seat (1.1.6) fixes the optical axis (1.1.7) to both sides of the lifting beam (1.1.3). The optical axis (1.1.7) passes through the graphite copper sleeve (1.1.5), which is fixed to both sides of the bottom beam (1.1.1) of the walking unit. The optical axis thrust ring (1.1.8) is fixed to the upper part of the optical axis (1.1.7). The limit switch mounting seat (1.1.14) is fixed to both sides of the bottom beam (1.1.1) of the walking unit and is connected to the lower limit limit switch (1.1.9) and the upper limit limit switch (1.1.13) by screws. Fixed; the right-angle geared motor (1.1.10) transmits power to the worm gear jack (1.1.11) through the coupling (1.1.17), the frame of the worm gear jack (1.1.11) is fixed in the middle of the bottom beam (1.1.1) of the traveling unit, and the screw of the worm gear jack (1.1.11) is fixed to the lifting beam (1.1.3) through the lifting platform connecting plate (1.1.12); the geared motor mounting seat (1.1.18) fixes the right-angle geared motor (1.1.10) to the motor seat fixing beam (1.1.19) with screws, and the motor seat fixing beam (1.1.19) is fixed to the bottom beam (1.1.1) of the traveling unit with screws;

[0015] The walking wheel drive servo motor (1.1.16) can drive the planetary reduction walking wheel (1.1.2) to move, realizing the forward, backward and stop of the device. The large universal wheel (1.1.15) is a driven wheel, which facilitates the direction correction of the device during the walking process.

[0016] The right-angle geared motor (1.1.10) transmits power to the worm gear jack (1.1.11) through the coupling (1.1.17), enabling the lifting and lowering of the small universal wheel (1.1.4). The graphite copper sleeve (1.1.5) and the optical shaft (1.1.7) provide linear constraints on the lifting and lowering of the small universal wheel (1.1.4). The lower limit limit switch (1.1.9) and the upper limit limit switch (1.1.13) provide limit protection for the upper and lower limit positions of the lifting and lowering of the small universal wheel (1.1.4).

[0017] Preferably, the support frame includes a column (1.2), an electrical control backplate (1.3), a crossbeam (1.12), a crossbeam connecting block (1.13), a column connecting plate (1.15), a square frame (1.16), a sheet metal mounting beam pad (1.22), and a sheet metal mounting beam (1.23);

[0018] The left traveling unit (1.1) and the right traveling unit (1.14) are symmetrically arranged on the left and right sides; the outer ends of the left traveling unit (1.1) and the right traveling unit (1.14) are fixedly installed with the sheet metal mounting beam (1.23) along the Y direction through the sheet metal mounting beam pad (1.22); the inner ends of the left traveling unit (1.1) and the right traveling unit (1.14) are fixedly installed with the crossbeam (1.12) along the Y direction through the column connecting plate (1.15) and the column (1.2);

[0019] The square frame (1.16) is connected to the column (1.2) by screws; the electrical control backplate (1.3) is fixed to the square frame (1.16) by screws;

[0020] The crossbeam connecting block (1.13) fixes the crossbeam (1.12) to the column (1.2) with screws.

[0021] Preferably, the vertical height adjustment drive unit includes a vertical linear module (1.6), a vertical linear module servo motor (1.7), a vertical cable chain (1.8), a vertical linear module mounting plate (1.9), a vertical cable chain moving end mounting bracket (1.11), and a vertical cable chain fixed end mounting bracket (1.18).

[0022] The horizontal walking and scanning drive unit includes a horizontal linear module servo motor (1.4), a horizontal cable chain (1.5), a horizontal linear module (1.10), and a horizontal cable chain mounting bracket (1.17).

[0023] The industrial wide-format CIS line scan camera (1.21) is equipped with a line scan camera mounting bracket (1.19) and a line scan camera lifting bracket (1.20);

[0024] The vertical linear module (1.6) and the horizontal linear module (1.10) include positive and negative limit switches and a zero limit switch;

[0025] The horizontal linear module (1.10) is disposed inside the crossbeam (1.12), and the input end of the horizontal linear module (1.10) is equipped with the horizontal linear module servo motor (1.4); the horizontal linear module (1.10) is provided with the horizontal cable chain (1.5) inside; the moving end of the horizontal cable chain (1.5) is fixed to the horizontal cable chain mounting bracket (1.17); the fixed end of the horizontal cable chain (1.5) is fixed to the crossbeam (1.12);

[0026] The vertical linear module (1.6) is vertically arranged along the Z direction. The input end of the vertical linear module (1.6) is equipped with the vertical linear module servo motor (1.7). The vertical cable chain (1.8) is installed on the outside of the vertical linear module (1.6). The fixed end of the vertical cable chain (1.8) is fixed to the vertical cable chain fixed end mounting bracket (1.18). The vertical cable chain fixed end mounting bracket (1.18) is fixed to the horizontal cable chain mounting bracket (1.17) and to the slider of the horizontal linear module (1.10). The moving end of the vertical cable chain (1.8) is fixed to the vertical cable chain moving end mounting bracket (1.11).

[0027] The vertical straight module mounting plate (1.9) is mounted on the slider of the horizontal straight module (1.10); the vertical straight module (1.6) is fixed to the front of the vertical straight module mounting plate (1.9) by screws;

[0028] The vertical drag chain moving end mounting bracket (1.11) is fixed to the upper right side of the line scan camera lifting bracket (1.20); the line scan camera mounting bracket (1.19) is installed on the front and rear sides of the lower part of the line scan camera lifting bracket (1.20); the industrial wide-format CIS line scan camera (1.21) is installed below the line scan camera mounting bracket (1.19); the upper part of the line scan camera lifting bracket (1.20) is fixed to the slider of the vertical linear module (1.6).

[0029] Preferably, the host (1) further includes a computer (1.24), a computer bracket (1.25), a UPS power supply (1.26), and a housing support frame (1.27);

[0030] The computer (1.24) and the UPS power supply (1.26) are placed above the computer bracket (1.25); the computer bracket (1.25) is fixed to the support frame; the outer shell support frame (1.27) is installed on each of the four sides of the support frame;

[0031] The UPS power supply (1.26) can provide emergency power to the large-format scanning device in the event of a sudden power outage, so as to complete the remaining scanning work and ensure the safe operation of the device.

[0032] Preferably, the outer shell (2) includes a bottom left apron (2.1), an upper left cover (2.2), a left door (2.3), a front guard plate (2.4), a front left door (2.5), a front right door (2.6), a front door lock (2.7), an upper right cover (2.8), a bottom right apron (2.9), a bottom middle apron (2.10), a rear left door panel (2.11), a rear right door panel (2.12), a rear door lock (2.13), a rear guard plate (2.14), a top small cover plate (2.15), and a top large cover plate (2.16).

[0033] The front guard plate (2.4) and the rear guard plate (2.14) are symmetrically arranged front and rear; the top large cover plate (2.16) is installed at the top center of the front guard plate (2.4) and the rear guard plate (2.14), and the top small cover plate (2.15) is installed on the left and right sides of the top large cover plate (2.16); the upper left side cover (2.2) is installed on the front and rear sides of the top small cover plate (2.15) on the left; the upper right side cover (2.8) is installed on the front and rear sides of the top small cover plate (2.15) on the right.

[0034] The front left door (2.5) and the front right door (2.6) are fixed to the middle of the front guard plate (2.4) by hinges; the front door lock (2.7) is installed between the front left door (2.5) and the front right door (2.6);

[0035] The rear left door panel (2.11) and the rear right door panel (2.12) are fixed to the middle of the rear guard plate (2.14) by hinges; the rear door lock (2.13) is installed between the rear left door panel (2.11) and the rear right door panel (2.12);

[0036] The bottom left apron (2.1), the bottom right apron (2.9), and the bottom middle apron (2.10) are fixedly connected to the sheet metal mounting beam (1.23) and the outer shell support frame (1.27) by screws, and are located below the front guard plate (2.4) and the rear guard plate (2.14);

[0037] The left door (2.3) includes: a left door frame (2.3.1), a left door panel (2.3.2), a left door lock (2.3.3.), and a left door handle (2.3.4); the left door frame (2.3.1) is fixed to the upper left side cover (2.2) by screws, and the left door panel (2.3.2) is fixed to the left door frame (2.3.1) by hinges; the left door handle (2.3.4) is fixed to the middle left side of the left door panel (2.3.2); and the left door lock (2.3.3.) is fixed below the left door handle (2.3.4).

[0038] Preferably, the front guard plate (2.4) and the rear guard plate (2.14) have the same structure; the bottom left apron (2.1) and the bottom right apron (2.9) have the same structure; and one bottom middle apron (2.10) is installed at the front and one at the rear below the front guard plate (2.4) and the rear guard plate (2.14).

[0039] The front left door (2.5) and the front right door (2.6) are double doors with glass in the middle; the rear left door panel (2.11) and the rear right door panel (2.12) are double doors with glass in the middle.

[0040] Preferably, the control panel (3) includes buttons and indicator lights (3.1), a display (3.2), a control panel frame (3.3), and a pull-out keyboard and mouse tray (3.4); the buttons and indicator lights (3.1) are fixed to the right side of the upper right side cover (2.8) and distributed on both sides of the control panel frame (3.3); the display (3.2) is fixed in the middle of the control panel frame (3.3); and the pull-out keyboard and mouse tray (3.4) is fixed in the lower part of the control panel frame (3.3).

[0041] The present invention also provides a scanning method based on a large-format scanning device, comprising the following steps:

[0042] Step S1: Place the artwork to be scanned flat on the ground or a specific platform, ensuring that the artwork is aligned with the forward path of the large-format scanning device.

[0043] In step S2, the input terminals of the host computer are connected to the positive and negative limit switches and the zero limit switches of the industrial wide-field CIS line scan camera (1.21), the lower limit limit switch (1.1.9), the upper limit limit switch (1.1.13), the vertical linear module (1.6), and the horizontal linear module (1.10); the output terminals of the host computer are connected to the servo motors of the horizontal linear module (1.4), the vertical linear module (1.7), the walking wheel drive servo motor (1.1.16), and the right-angle reduction motor (1.1.10).

[0044] Step S3: Set initial parameters on the host computer interface, including: scanning resolution, and motor speeds of the horizontal linear module servo motor (1.4), vertical linear module servo motor (1.7), walking wheel drive servo motor (1.1.16), and right angle reduction motor (1.1.10).

[0045] In step S4, the host computer controls the height of the industrial wide-format CIS line scan camera (1.21) from the scanned artwork using the vertical linear module servo motor (1.7) according to the initial parameters, and controls the scanning speed using the horizontal linear module servo motor (1.4). During the scanning process of the industrial wide-format CIS line scan camera (1.21), the walking wheel drive servo motor (1.1.16) stops rotating, that is, the large-format scanning device remains stationary. When the industrial wide-format CIS line scan camera (1.21) moves from the zero position of the horizontal linear module (1.10) to the positive limit position or moves to the specified distance, it indicates that one scan is completed.

[0046] In step S5, the industrial wide-format CIS line scan camera (1.21) returns to the zero position of the horizontal linear module (1.10) while maintaining its vertical height. At the same time, the servo motor (1.1.16) driven by the walking wheel rotates, causing the large-format scanning device to advance one scanning width and then stop. The industrial wide-format CIS line scan camera (1.21) moves from the zero position of the horizontal linear module (1.10) to the positive limit position to perform the next scan. This cycle continues until all scans are completed.

[0047] Step S5: The host computer stitches together the scanned images from each scan to obtain a complete scanned image and saves the scanned image.

[0048] In step S6, when all scanning tasks are completed, the vertical linear module servo motor (1.7) rotates, controlling the industrial wide-format CIS line scan camera (1.21) to return to the zero position of the vertical linear module (1.6), the horizontal linear module servo motor (1.4) rotates, controlling the industrial wide-format CIS line scan camera (1.21) to return to the zero position of the horizontal linear module (1.10), and the walking wheel drive servo motor (1.1.16) rotates, controlling the large-format scanning device to return to its original position and stop.

[0049] During the scanning process, the positive and negative limit switches and the zero limit switch of the vertical linear module (1.6) and the horizontal linear module (1.10) monitor in real time whether the industrial wide-format CIS line scan camera (1.21) reaches the shortest and longest stroke, thereby controlling the movement range of the industrial wide-format CIS line scan camera (1.21) and ensuring the safety of operation.

[0050] Preferred options also include:

[0051] A method for manually moving the position of the large-format scanning device without power supply includes the following steps:

[0052] Step 1: Press the button on the control panel (3) to control the descent of the small universal wheel (1.1.4), control the right angle reduction motor (1.1.10) to rotate, thereby extending the lifting rod of the worm gear jack (1.1.11), so that the lifting beam (1.1.3) and the small universal wheel (1.1.4) descend together; when the small universal wheel (1.1.4) contacts the ground, it will lift the planetary reduction travel wheel (1.1.2) and the large universal wheel (1.1.15) off the ground;

[0053] Step 2: The optical axis thrust ring (1.1.8) presses down the lower limit limit switch (1.1.9) and triggers the lower limit signal. The small universal wheel (1.1.4) reaches the lowest point, and the right angle reduction motor (1.1.10) stops rotating.

[0054] Step 3: Manually push the large-format scanning device to the designated position. The small caster wheel (1.1.4) enables the large-format scanning device to move in any direction in the horizontal plane and turn on the spot.

[0055] Step 4: When scanning is required, manually push the large-format scanning device to the designated position, press the button on the operating table (3) to control the small universal wheel (1.1.4) to rise, control the right angle reduction motor (1.1.10) to rotate, thereby causing the lifting rod of the worm gear lift (1.1.11) to retract, so that the lifting beam (1.1.3) and the small universal wheel (1.1.4) rise together. When the optical shaft thrust ring (1.1.8) presses up the upper limit limit switch (1.1.13) to trigger the upper limit signal, the small universal wheel (1.1.4) reaches the highest point, and the right angle reduction motor (1.1.10) stops rotating.

[0056] The large-format scanning device and method provided by this invention have the following advantages:

[0057] This invention provides a large-format scanning device and method capable of automating the scanning of calligraphy and painting works of various sizes. The scanning width is customizable, and the scanning length is unlimited. A wide-format CIS line scan camera is used for scanning, which is unaffected by ambient light, resulting in distortion-free and highly accurate scanned images. The height of the CIS line scan camera is adjustable, making it suitable for scanning objects of different heights. Attached Figure Description

[0058] Figure 1 A partial cross-sectional view of the large-format scanning device provided by the present invention;

[0059] Figure 2 A front view of the large-format scanning device provided by the present invention;

[0060] Figure 3 Rear view of the large-format scanning device provided by the present invention;

[0061] Figure 4 A top view of the large-format scanning device provided by the present invention;

[0062] Figure 5 Left view of the large-format scanning device provided by the present invention;

[0063] Figure 6 Right view of the large-format scanning device provided by the present invention;

[0064] Figure 7 Rear oblique isometric projection of the large-format scanning device provided by the present invention;

[0065] Figure 8 A front oblique isometric projection of the large-format scanning device provided by the present invention;

[0066] Figure 9 This is a front view of the main unit of the large-format scanning device provided by the present invention;

[0067] Figure 10 Right view of the main unit of the large-format scanning device provided by the present invention;

[0068] Figure 11 Axonometric drawing of the main unit of the large-format scanning device provided by the present invention;

[0069] Figure 12 A top view of the main unit of the large-format scanning device provided by the present invention;

[0070] Figure 13 Left view of the main unit of the large-format scanning device provided by the present invention;

[0071] Figure 14 A cross-sectional view of the walking unit of the large-format scanning device provided by the present invention;

[0072] Figure 15 This is a top view of the walking unit of the large-format scanning device provided by the present invention;

[0073] Figure 16 Left view of the walking unit of the large-format scanning device provided by the present invention. Detailed Implementation

[0074] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the invention.

[0075] This invention provides a large-format scanning device and method capable of automating the scanning of calligraphy and painting works of various sizes. The scanning width is customizable, and the scanning length is unlimited. A wide-format CIS line scan camera is used for scanning, which is unaffected by ambient light, resulting in distortion-free and highly accurate scanned images. The height of the CIS line scan camera is adjustable, making it suitable for scanning objects of different heights.

[0076] See Figures 1 to 16 The present invention provides a large-format scanning device, including a main unit 1, a housing 2 and an operating table 3;

[0077] A housing 2 is installed on the outside of the main unit 1; an operating table 3 is installed on the outside of the housing 2.

[0078] The main unit 1 includes a support frame, an industrial wide-format CIS line scan camera 1.21, a vertical height adjustment drive unit, a horizontal walking and scanning drive unit, and a walking unit;

[0079] The walking units are symmetrically arranged on both sides of the support frame along the X-direction, including a left walking unit 1.1 and a right walking unit 1.14, which drive the entire large-format scanning device to move along the X-direction. Between the left walking unit 1.1 and the right walking unit 1.14, a horizontal walking scanning drive unit is arranged along the Y-direction. The industrial wide-format CIS line scan camera 1.21 is arranged between the left walking unit 1.1 and the right walking unit 1.14, and is connected to the vertical height adjustment drive unit and the horizontal walking scanning drive unit, respectively. The vertical height adjustment drive unit adjusts the vertical height of the industrial wide-format CIS line scan camera 1.21 to adapt to the scanning requirements of objects of different heights. The horizontal walking scanning drive unit drives the industrial wide-format CIS line scan camera 1.21 to move along the Y-direction at a specified speed to complete a fixed-width scan.

[0080] The operating platform 3 is connected to the industrial wide-format CIS line scan camera 1.21, the vertical height adjustment drive unit, the horizontal direction walking scan drive unit, and the walking unit, respectively.

[0081] The main unit (1) includes a left traveling unit 1.1, a column 1.2, an electrical control backplate 1.3, a horizontal linear module servo motor 1.4, a horizontal cable chain 1.5, a vertical linear module 1.6, a vertical linear module servo motor 1.7, a vertical cable chain 1.8, a vertical linear module mounting plate 1.9, a horizontal linear module 1.10, a vertical cable chain moving end mounting bracket 1.11, a crossbeam 1.12, a crossbeam connecting block 1.13, and a right traveling unit 1. 14. Column connecting plate 1.15. Square frame 1.16. Horizontal cable chain mounting bracket 1.17. Vertical cable chain fixed end mounting bracket 1.18. Line scan camera mounting bracket 1.19. Line scan camera lifting bracket 1.20. Industrial wide-format CIS line scan camera 1.21. Sheet metal mounting beam pad 1.22. Sheet metal mounting beam 1.23. Computer 1.24. Computer bracket 1.25. UPS power supply 1.26. Shell support bracket 1.27.

[0082] In one specific embodiment, the left walking unit 1.1 and the right walking unit 1.14 have the same structure and are symmetrically arranged at the bottom of the support frame;

[0083] The structure of the left traveling unit 1.1 and the right traveling unit 1.14 includes: a traveling unit bottom beam 1.1.1, a planetary reduction traveling wheel 1.1.2, a lifting beam 1.1.3, a small universal wheel 1.1.4, a graphite copper sleeve 1.1.5, a light shaft fixing seat 1.1.6, a light shaft 1.1.7, a light shaft thrust ring 1.1.8, a lower limit travel switch 1.1.9, a right angle reduction motor 1.1.10, a worm gear jack 1.1.11, a jack connecting plate 1.1.12, an upper limit travel switch 1.1.13, a limit switch mounting seat 1.1.14, a large universal wheel 1.1.15, a traveling wheel drive servo motor 1.1.16, a coupling 1.1.17, a reduction motor mounting seat 1.1.18, and a motor seat fixing beam 1.1.19.

[0084] The servo motor 1.1.16 for driving the walking wheels is installed at the input end of the planetary reduction walking wheel 1.1.2. The planetary reduction walking wheel 1.1.2 has its own planetary reducer and is fixed to the front of the bottom beam 1.1.1 of the walking unit by screws. The large universal wheel 1.1.15 is fixed to the rear of the bottom beam 1.1.1 of the walking unit. The servo motor 1.1.16 for driving the walking wheels can drive the planetary reduction walking wheel 1.1.2 to move, realizing the forward, backward and stop of the device. The large universal wheel 1.1.15 is a driven wheel, and its function is to facilitate the direction correction of the device during the walking process.

[0085] A small universal wheel 1.1.4 is fixed to each side of the lifting beam 1.1.3. The optical axis fixing seat 1.1.6 fixes the optical axis 1.1.7 to both sides of the lifting beam 1.1.3. The optical axis 1.1.7 passes through the graphite copper sleeve 1.1.5, which is fixed to both sides of the bottom beam 1.1.1 of the traveling unit. The optical axis thrust ring 1.1.8 is fixed to the upper part of the optical axis 1.1.7. The limit switch mounting seat 1.1.14 is fixed to both sides of the bottom beam 1.1.1 of the traveling unit and is fixed to the lower limit travel switch 1.1.9 and the upper limit travel switch 1.1.13 by screws. Angle reduction motor 1.1.10 transmits power to worm gear jack 1.1.11 via coupling 1.1.17. The frame of worm gear jack 1.1.11 is fixed to the middle of the bottom beam 1.1.1 of the traveling unit. The screw of worm gear jack 1.1.11 is fixed to the lifting beam 1.1.3 via the lifting connecting plate 1.1.12. The reduction motor mounting base 1.1.18 fixes the right angle reduction motor 1.1.10 to the motor base fixing beam 1.1.19 with screws. The motor base fixing beam 1.1.19 is fixed to the bottom beam 1.1.1 of the traveling unit with screws.

[0086] The servo motor 1.1.16 drives the planetary reduction wheel 1.1.2 to move, realizing the forward, backward and stop of the device. The large universal wheel 1.1.15 is the driven wheel, which facilitates the direction correction of the device during the movement process.

[0087] The right-angle geared motor 1.1.10 transmits power to the worm gear jack 1.1.11 via the coupling 1.1.17, enabling the lifting and lowering of the small universal wheel 1.1.4. The graphite copper sleeve 1.1.5 and the optical shaft 1.1.7 provide linear constraints for the lifting and lowering of the small universal wheel 1.1.4. The lower limit limit switch 1.1.9 and the upper limit limit switch 1.1.13 provide limit protection for the upper and lower limit positions of the lifting and lowering of the small universal wheel 1.1.4.

[0088] As a specific embodiment, the support frame includes a column 1.2, an electrical control backplate 1.3, a crossbeam 1.12, a crossbeam connecting block 1.13, a column connecting plate 1.15, a square frame 1.16, a sheet metal mounting beam pad 1.22, and a sheet metal mounting beam 1.23;

[0089] The left traveling unit 1.1 and the right traveling unit 1.14 are symmetrically arranged on the left and right sides; the outer ends of the left traveling unit 1.1 and the right traveling unit 1.14 are fixedly installed with sheet metal mounting beam 1.23 along the Y direction through sheet metal mounting beam pads 1.22; the inner ends of the left traveling unit 1.1 and the right traveling unit 1.14 are fixedly installed with crossbeam 1.12 along the Y direction through column connecting plates 1.15 and columns 1.2.

[0090] The square frame 1.16 is connected to the column 1.2 with screws; the electrical control backplate 1.3 is fixed to the square frame 1.16 with screws; electrical control components are installed on the electrical control backplate 1.3. The crossbeam connecting block 1.13 fixes the crossbeam 1.12 to the column 1.2 with screws.

[0091] In practical applications, a sheet metal mounting beam 1.23 is installed at the front and rear of the main unit 1, and two shell support frames 1.27 are installed on the left and right sides.

[0092] As a specific embodiment, the vertical height adjustment drive unit includes a vertical linear module 1.6, a vertical linear module servo motor 1.7, a vertical cable chain 1.8, a vertical linear module mounting plate 1.9, a vertical cable chain moving end mounting bracket 1.11, and a vertical cable chain fixed end mounting bracket 1.18;

[0093] The horizontal walking and scanning drive unit includes a horizontal linear module servo motor 1.4, a horizontal cable chain 1.5, a horizontal linear module 1.10, and a horizontal cable chain mounting bracket 1.17;

[0094] The industrial wide-format CIS line scan camera 1.21 is equipped with a line scan camera mounting bracket 1.19 and a line scan camera lifting bracket 1.20;

[0095] The vertical linear module 1.6 and the horizontal linear module 1.10 include positive and negative limit switches and zero limit switches;

[0096] A horizontal linear module 1.10 is located inside the crossbeam 1.12. A horizontal linear module servo motor 1.4 is installed at the input end of the horizontal linear module 1.10. A horizontal cable chain 1.5 is installed inside the horizontal linear module 1.10. The moving end of the horizontal cable chain 1.5 is fixed to the horizontal cable chain mounting bracket 1.17. The fixed end of the horizontal cable chain 1.5 is fixed to the crossbeam 1.12.

[0097] The vertical linear module 1.6 is set vertically along the Z direction. The input end of the vertical linear module 1.6 is equipped with a vertical linear module servo motor 1.7. A vertical cable chain 1.8 is installed on the outside of the vertical linear module 1.6. The fixed end of the vertical cable chain 1.8 is fixed to the vertical cable chain fixed end mounting bracket 1.18. The vertical cable chain fixed end mounting bracket 1.18 is fixed to the horizontal cable chain mounting bracket 1.17 and fixed to the slider of the horizontal linear module 1.10. The moving end of the vertical cable chain 1.8 is fixed to the vertical cable chain moving end mounting bracket 1.11.

[0098] A vertical linear module mounting plate 1.9 is mounted on the slider of the horizontal linear module 1.10; the vertical linear module 1.6 is fixed to the front of the vertical linear module mounting plate 1.9 by screws;

[0099] The vertical drag chain moving end mounting bracket 1.11 is fixed to the upper right side of the line scan camera lifting bracket 1.20; the line scan camera mounting bracket 1.19 is installed on the front and rear sides of the lower part of the line scan camera lifting bracket 1.20; the industrial wide-format CIS line scan camera 1.21 is installed below the line scan camera mounting bracket 1.19; the upper part of the line scan camera lifting bracket 1.20 is fixed to the slider of the vertical linear module 1.6.

[0100] As a specific embodiment, the host 1 also includes a computer 1.24, a computer bracket 1.25, a UPS power supply 1.26, and a housing support frame 1.27;

[0101] The computer 1.24 and UPS power supply 1.26 are placed on top of the computer bracket 1.25; the computer bracket 1.25 is fixed to the support frame; and outer shell support frames 1.27 are installed on the outer sides of the support frame.

[0102] The UPS power supply 1.26 can provide emergency power to the large-format scanning device in the event of a sudden power outage, so as to complete the remaining scanning work and ensure the safe operation of the device.

[0103] As a specific embodiment, the outer casing 2 includes a bottom left apron 2.1, an upper left protective cover 2.2, a left door 2.3, a front protective plate 2.4, a front left door 2.5, a front right door 2.6, a front door lock 2.7, an upper right protective cover 2.8, a bottom right apron 2.9, a bottom middle apron 2.10, a rear left door panel 2.11, a rear right door panel 2.12, a rear door lock 2.13, a rear protective plate 2.14, a top small cover 2.15, and a top large cover 2.16;

[0104] The front guard plate 2.4 and the rear guard plate 2.14 are symmetrically arranged front and rear; a large top cover plate 2.16 is installed at the top center of the front guard plate 2.4 and the rear guard plate 2.14, and small top cover plates 2.15 are installed on the left and right sides of the large top cover plate 2.16; an upper left side cover 2.2 is installed on the front and rear sides of the left side small top cover plate 2.15; an upper right side cover 2.8 is installed on the front and rear sides of the right side small top cover plate 2.15.

[0105] The front left door 2.5 and the front right door 2.6 are fixed to the middle of the front guard plate 2.4 by hinges; a front door lock 2.7 is installed between the front left door 2.5 and the front right door 2.6;

[0106] The rear left door panel 2.11 and the rear right door panel 2.12 are fixed to the middle of the rear guard plate 2.14 by hinges; a rear door lock 2.13 is installed between the rear left door panel 2.11 and the rear right door panel 2.12;

[0107] The bottom left apron 2.1, the bottom right apron 2.9, and the bottom middle apron 2.10 are fixedly connected to the sheet metal mounting beam 1.23 and the outer shell support frame 1.27 by screws, and are located below the front guard plate 2.4 and the rear guard plate 2.14;

[0108] The left door 2.3 includes: a left door frame 2.3.1, a left door panel 2.3.2, a left door lock 2.3.3, and a left door handle 2.3.4; the left door frame 2.3.1 is fixed to the upper left side cover 2.2 with screws, and the left door panel 2.3.2 is fixed to the left door frame 2.3.1 with hinges; the left door handle 2.3.4 is fixed to the middle left side of the left door panel 2.3.2; the left door lock 2.3.3 is fixed below the left door handle 2.3.4.

[0109] The front guard plate 2.4 and the rear guard plate 2.14 have the same structure; the bottom left apron 2.1 and the bottom right apron 2.9 have the same structure; the bottom middle apron 2.10 is installed at the front and back, respectively, below the front guard plate 2.4 and the rear guard plate 2.14.

[0110] The front left door 2.5 and the front right door 2.6 are double doors with glass in the middle; the rear left door panel 2.11 and the rear right door panel 2.12 are also double doors with glass in the middle.

[0111] As a specific embodiment, the control panel 3 includes buttons and indicator lights 3.1, a display 3.2, a control panel frame 3.3, and a pull-out keyboard and mouse tray 3.4; the buttons and indicator lights 3.1 are fixed to the right side of the upper right side cover 2.8 and distributed on both sides of the control panel frame 3.3; the display 3.2 is fixed in the middle of the control panel frame 3.3; and the pull-out keyboard and mouse tray 3.4 is fixed in the lower part of the control panel frame 3.3.

[0112] The present invention also provides a scanning method based on a large-format scanning device, comprising the following steps:

[0113] Step S1: Place the artwork to be scanned flat on the ground or a specific platform, ensuring that the artwork is aligned with the forward path of the large-format scanning device.

[0114] In step S2, the input terminals of the host computer are connected to the positive and negative limit switches and the zero limit switches of the industrial wide-format CIS line scan camera 1.21, the lower limit limit switch 1.1.9, the upper limit limit switch 1.1.13, the vertical linear module 1.6, and the horizontal linear module 1.10, respectively; the output terminals of the host computer are connected to the horizontal linear module servo motor 1.4, the vertical linear module servo motor 1.7, the walking wheel drive servo motor 1.1.16, and the right-angle reduction motor 1.1.10, respectively.

[0115] Step S3: Set initial parameters on the host computer interface, including: scanning resolution, and motor speeds of the horizontal linear module servo motor 1.4, the vertical linear module servo motor 1.7, the walking wheel drive servo motor 1.1.16, and the right angle reduction motor 1.1.10.

[0116] In step S4, the host computer controls the height of the industrial wide-format CIS line scan camera 1.21 from the artwork being scanned via the vertical linear module servo motor 1.7, according to the initial parameters, and controls the scanning speed via the horizontal linear module servo motor 1.4. During the scanning process of the industrial wide-format CIS line scan camera 1.21, the walking wheel drive servo motor 1.1.16 stops rotating, that is, the large-format scanning device remains stationary. When the industrial wide-format CIS line scan camera 1.21 moves from the zero position of the horizontal linear module 1.10 to the positive limit position or moves to the specified distance, it indicates that one scan is completed.

[0117] In step S5, the industrial wide-format CIS line scan camera 1.21 returns to the zero position of the horizontal linear module 1.10 while maintaining its vertical height. At the same time, the servo motor 1.1.16 driven by the traveling wheel rotates, causing the large-format scanning device to advance one scanning width and then stop. The industrial wide-format CIS line scan camera 1.21 moves from the zero position of the horizontal linear module 1.10 to the positive limit position to perform the next scan. This cycle continues until all scans are completed.

[0118] Step S5: The host computer stitches together the scanned images from each scan to obtain a complete scanned image and saves the scanned image.

[0119] In step S6, when all scanning tasks are completed, the vertical linear module servo motor 1.7 rotates, controlling the industrial wide-format CIS line scan camera 1.21 to return to the zero position of the vertical linear module 1.6, the horizontal linear module servo motor 1.4 rotates, controlling the industrial wide-format CIS line scan camera 1.21 to return to the zero position of the horizontal linear module 1.10, and the walking wheel drive servo motor 1.1.16 rotates, controlling the large-format scanning device to return to its original position and stop.

[0120] During the scanning process, the positive and negative limit switches and the zero limit switch of the vertical linear module 1.6 and the horizontal linear module 1.10 monitor in real time whether the industrial wide-format CIS line scan camera 1.21 reaches the shortest and longest stroke, thereby controlling the movement range of the industrial wide-format CIS line scan camera 1.21 and ensuring the safety of operation.

[0121] In the absence of power, it is a common need to manually and easily move the position of the large-format scanning device. The method for manually moving the position of the large-format scanning device includes the following steps:

[0122] Step 1: Press the button on the control panel 3 to control the descent of the small universal wheel 1.1.4, which will control the right-angle reduction motor 1.1.10 to rotate, thereby extending the lifting rod of the worm gear jack 1.1.11, causing the lifting beam 1.1.3 and the small universal wheel 1.1.4 to descend together; after the small universal wheel 1.1.4 contacts the ground, it will lift the planetary reduction travel wheel 1.1.2 and the large universal wheel 1.1.15 off the ground;

[0123] Step 2: The optical axis thrust ring 1.1.8 presses down the lower limit limit switch 1.1.9, triggering the lower limit signal. The small universal wheel 1.1.4 reaches the lowest point, and the right angle reduction motor 1.1.10 stops rotating.

[0124] Step 3: Manually push the large-format scanning device to the designated position. The small caster wheel 1.1.4 enables the large-format scanning device to move in any direction in the horizontal plane and turn on the spot.

[0125] Step 4: When scanning is required, manually push the large-format scanning device to the designated position, press the button on the operating panel 3 to control the small universal wheel 1.1.4 to rise, control the right angle reduction motor 1.1.10 to rotate, thereby causing the lifting rod of the worm gear lift 1.1.11 to retract, so that the lifting beam 1.1.3 and the small universal wheel 1.1.4 rise together. When the optical shaft thrust ring 1.1.8 presses up the upper limit limit switch 1.1.13 to trigger the upper limit signal, the small universal wheel 1.1.4 reaches the highest point, and the right angle reduction motor 1.1.10 stops rotating.

[0126] The large-format scanning device and method provided by this invention have the following advantages:

[0127] This invention provides a large-format scanning device and method capable of automating the scanning of calligraphy and painting works of various sizes. The scanning width is customizable, and the scanning length is unlimited. A wide-format CIS line scan camera is used for scanning, which is unaffected by ambient light, resulting in distortion-free and highly accurate scanned images. The height of the CIS line scan camera is adjustable, making it suitable for scanning objects of different heights.

[0128] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A large-format scanning device, characterized in that it comprises a main unit (1), a housing (2), and an operating table (3); The outer casing (2) is fitted onto the outside of the host (1); the operating table (3) is installed on the outside of the outer casing (2). The host (1) includes a support frame, an industrial wide-format CIS line scan camera (1.21), a vertical height adjustment drive unit, a horizontal walking and scanning drive unit, and a walking unit; The walking units are symmetrically arranged on both sides of the support frame along the X direction, including a left walking unit (1.1) and a right walking unit (1.14), used to drive the entire large-format scanning device to move along the X direction; between the left walking unit (1.1) and the right walking unit (1.14), a horizontal walking scanning drive unit is arranged along the Y direction; the industrial wide-format CIS line scan camera (1.21) is arranged between the left walking unit (1.1) and the right walking unit (1.14), and is connected to the vertical height adjustment drive unit and the horizontal walking scanning drive unit respectively. The vertical height adjustment drive unit adjusts the vertical height of the industrial wide-format CIS line scan camera (1.21) to adapt to the scanning of objects of different heights; the horizontal walking scanning drive unit drives the industrial wide-format CIS line scan camera (1.21) to move along the Y direction at a specified speed to complete a fixed-width scan; The operating platform (3) is connected to the industrial wide-format CIS line array camera (1.21), the vertical height adjustment drive unit, the horizontal direction walking and scanning drive unit and the walking unit respectively; The left walking unit (1.1) and the right walking unit (1.14) have the same structure and are symmetrically arranged at the bottom of the support frame. The left traveling unit (1.1) and the right traveling unit (1.14) are structured as follows: they include a traveling unit base beam (1.1.1), planetary reduction traveling wheels (1.1.2), a lifting beam (1.1.3), small universal wheels (1.1.4), a graphite copper sleeve (1.1.5), an optical axis fixing seat (1.1.6), an optical axis (1.1.7), an optical axis thrust ring (1.1.8), and a lower limit travel switch (1.1.9). Right-angle geared motor (1.1.10), worm gear jack (1.1.11), jack connecting plate (1.1.12), upper limit limit switch (1.1.13), limit switch mounting base (1.1.14), large universal wheel (1.1.15), travel wheel drive servo motor (1.1.16), coupling (1.1.17), geared motor mounting base (1.1.18), and motor base fixing beam (1.1.19). The servo motor (1.1.16) driving the walking wheel is installed at the input end of the planetary reduction walking wheel (1.1.2). The planetary reduction walking wheel (1.1.2) has its own planetary reducer and is fixed to the front of the bottom beam (1.1.1) of the walking unit by screws. The large universal wheel (1.1.15) is fixed to the rear of the bottom beam (1.1.1) of the walking unit. A small universal wheel (1.1.4) is fixed to each side of the lifting beam (1.1.3). The optical axis fixing seat (1.1.6) fixes the optical axis (1.1.7) to both sides of the lifting beam (1.1.3). The optical axis (1.1.7) passes through the graphite copper sleeve (1.1.5), which is fixed to both sides of the bottom beam (1.1.1) of the walking unit. The optical axis thrust ring (1.1.8) is fixed to the upper part of the optical axis (1.1.7). The limit switch mounting seat (1.1.14) is fixed to both sides of the bottom beam (1.1.1) of the walking unit and is connected to the lower limit limit switch (1.1.9) and the upper limit limit switch (1.1.13) by screws. Fixed; the right-angle geared motor (1.1.10) transmits power to the worm gear jack (1.1.11) through the coupling (1.1.17), the frame of the worm gear jack (1.1.11) is fixed in the middle of the bottom beam (1.1.1) of the walking unit, and the screw of the worm gear jack (1.1.11) is fixed to the lifting beam (1.1.3) through the lifting platform connecting plate (1.1.12); the geared motor mounting seat (1.1.18) fixes the right-angle geared motor (1.1.10) to the motor seat fixing beam (1.1.19) with screws, and the motor seat fixing beam (1.1.19) is fixed to the bottom beam (1.1.1) of the walking unit with screws; The servo motor (1.1.16) driving the walking wheel can drive the planetary reduction walking wheel ( 1.1.2) Walking, realizing the forward, backward and stop of the device. The large universal wheel (1.1.15) is a driven wheel, which is used to facilitate the direction correction of the device during walking. The right-angle geared motor (1.1.10) transmits power to the worm gear jack (1.1.11) through the coupling (1.1.17), enabling the lifting and lowering of the small universal wheel (1.1.4). The graphite copper sleeve (1.1.5) and the optical shaft (1.1.7) provide linear constraints on the lifting and lowering of the small universal wheel (1.1.4). The lower limit travel switch (1.1.9) and the upper limit travel switch (1.1.13) provide limit protection for the upper and lower limit positions of the lifting and lowering of the small universal wheel (1.1.4).

2. The large-format scanning device according to claim 1, characterized in that, The support frame includes a column (1.2), an electrical control backplate (1.3), a crossbeam (1.12), a crossbeam connecting block (1.13), a column connecting plate (1.15), a square frame (1.16), a sheet metal mounting beam pad (1.22), and a sheet metal mounting beam (1.23). The left traveling unit (1.1) and the right traveling unit (1.14) are symmetrically arranged on the left and right sides; the outer ends of the left traveling unit (1.1) and the right traveling unit (1.14) are fixedly installed with the sheet metal mounting beam (1.23) along the Y direction through the sheet metal mounting beam pad (1.22); the inner ends of the left traveling unit (1.1) and the right traveling unit (1.14) are fixedly installed with the crossbeam (1.12) along the Y direction through the column connecting plate (1.15) and the column (1.2). The square frame (1.16) is connected to the column (1.2) by screws; the electrical control backplate (1.3) is fixed to the square frame (1.16) by screws; The crossbeam connecting block (1.13) fixes the crossbeam (1.12) to the column (1.2) with screws.

3. The large-format scanning device according to claim 2, characterized in that, The vertical height adjustment drive unit includes a vertical linear module (1.6), a vertical linear module servo motor (1.7), a vertical cable chain (1.8), a vertical linear module mounting plate (1.9), a vertical cable chain moving end mounting bracket (1.11), and a vertical cable chain fixed end mounting bracket (1.18). The horizontal walking and scanning drive unit includes a horizontal linear module servo motor (1.4), a horizontal cable chain (1.5), a horizontal linear module (1.10), and a horizontal cable chain mounting bracket (1.17). The industrial wide-format CIS line scan camera (1.21) is equipped with a line scan camera mounting bracket (1.19) and a line scan camera lifting bracket (1.20). The vertical linear module (1.6) and the horizontal linear module (1.10) include positive and negative limit switches and a zero limit switch; The horizontal linear module (1.10) is disposed inside the crossbeam (1.12), and the input end of the horizontal linear module (1.10) is equipped with the horizontal linear module servo motor (1.4); the horizontal linear module (1.10) is provided with the horizontal cable chain (1.5) inside; the moving end of the horizontal cable chain (1.5) is fixed to the horizontal cable chain mounting bracket (1.17); the fixed end of the horizontal cable chain (1.5) is fixed to the crossbeam (1.12); The vertical linear module (1.6) is vertically arranged along the Z direction. The input end of the vertical linear module (1.6) is equipped with the vertical linear module servo motor (1.7). The vertical cable chain (1.8) is installed on the outside of the vertical linear module (1.6). The fixed end of the vertical cable chain (1.8) is fixed to the vertical cable chain fixed end mounting bracket (1.18). The vertical cable chain fixed end mounting bracket (1.18) is fixed to the horizontal cable chain mounting bracket (1.17) and to the slider of the horizontal linear module (1.10). The moving end of the vertical cable chain (1.8) is fixed to the vertical cable chain moving end mounting bracket (1.11). The vertical straight module mounting plate (1.9) is mounted on the slider of the horizontal straight module (1.10); the vertical straight module (1.6) is fixed to the front of the vertical straight module mounting plate (1.9) by screws; The vertical drag chain moving end mounting bracket (1.11) is fixed to the upper right side of the line scan camera lifting bracket (1.20); the line scan camera mounting bracket (1.19) is installed on the front and rear sides of the lower part of the line scan camera lifting bracket (1.20); the industrial wide-format CIS line scan camera (1.21) is installed below the line scan camera mounting bracket (1.19); the upper part of the line scan camera lifting bracket (1.20) is fixed to the slider of the vertical linear module (1.6).

4. A large-format scanning device according to claim 3, characterized in that, The host (1) also includes a computer (1.24), a computer bracket (1.25), a UPS power supply (1.26), and a housing support frame (1.27). The computer (1.24) and the UPS power supply (1.26) are placed on top of the computer bracket (1.25); the computer bracket (1.25) is fixed to the support frame; the outer shell support frame (1.27) is installed on each of the four sides of the support frame. The UPS power supply (1.26) can provide emergency power to the large-format scanning device in the event of a sudden power outage, so as to complete the remaining scanning work and ensure the safe operation of the device.

5. A large-format scanning device according to claim 4, characterized in that, The outer shell (2) includes a bottom left apron (2.1), an upper left cover (2.2), a left door (2.3), a front side panel (2.4), a front left door (2.5), a front right door (2.6), a front door lock (2.7), an upper right cover (2.8), a bottom right apron (2.9), a bottom middle apron (2.10), a rear left door panel (2.11), a rear right door panel (2.12), a rear door lock (2.13), a rear side panel (2.14), a top small cover (2.15), and a top large cover (2.16). The front guard plate (2.4) and the rear guard plate (2.14) are symmetrically arranged front and rear; the top large cover plate (2.16) is installed at the top center of the front guard plate (2.4) and the rear guard plate (2.14), and the top small cover plates (2.15) are installed on the left and right sides of the top large cover plate (2.16); the upper left side cover (2.2) is installed on the front and rear sides of the top small cover plate (2.15) on the left; the upper right side cover (2.8) is installed on the front and rear sides of the top small cover plate (2.15) on the right. The front left door (2.5) and the front right door (2.6) are fixed to the middle of the front guard plate (2.4) by hinges; the front door lock (2.7) is installed between the front left door (2.5) and the front right door (2.6). The rear left door panel (2.11) and the rear right door panel (2.12) are fixed to the middle of the rear guard plate (2.14) by hinges; the rear door lock (2.13) is installed between the rear left door panel (2.11) and the rear right door panel (2.12). The bottom left apron (2.1), the bottom right apron (2.9), and the bottom middle apron (2.10) are fixedly connected to the sheet metal mounting beam (1.23) and the outer shell support frame (1.27) by screws, and are located below the front guard plate (2.4) and the rear guard plate (2.14); The left door (2.3) includes: a left door frame (2.3.1), a left door panel (2.3.2), a left door lock (2.3.3), and a left door handle (2.3.4); the left door frame (2.3.1) is fixed to the upper left side cover (2.2) by screws, and the left door panel (2.3.2) is fixed to the left door frame (2.3.1) by hinges; the left door handle (2.3.4) is fixed to the middle left side of the left door panel (2.3.2); and the left door lock (2.3.3) is fixed below the left door handle (2.3.4).

6. A large-format scanning device according to claim 5, characterized in that, The front guard plate (2.4) and the rear guard plate (2.14) have the same structure; the bottom left apron (2.1) and the bottom right apron (2.9) have the same structure; the bottom middle apron (2.10) is installed at the front and back, one at each end, below the front guard plate (2.4) and the rear guard plate (2.14); The front left door (2.5) and the front right door (2.6) are double doors with glass in the middle; the rear left door panel (2.11) and the rear right door panel (2.12) are double doors.

7. A large-format scanning device according to claim 5, characterized in that, The control panel (3) includes buttons and indicator lights (3.1), a display (3.2), a control panel frame (3.3), and a pull-out keyboard and mouse tray (3.4); the buttons and indicator lights (3.1) are fixed to the right side of the upper right side cover (2.8) and distributed on both sides of the control panel frame (3.3); the display (3.2) is fixed in the middle of the control panel frame (3.3); and the pull-out keyboard and mouse tray (3.4) is fixed in the lower part of the control panel frame (3.3).

8. A scanning method based on the large-format scanning device according to any one of claims 3-7, characterized in that, Includes the following steps: Step S1: Place the artwork to be scanned flat on the ground or a specific platform, ensuring that the artwork is aligned with the forward path of the large-format scanning device. In step S2, the input terminals of the host computer are connected to the positive and negative limit switches and the zero limit switches of the industrial wide-field CIS line scan camera (1.21), the lower limit limit switch (1.1.9), the upper limit limit switch (1.1.13), the vertical linear module (1.6), and the horizontal linear module (1.10); the output terminals of the host computer are connected to the servo motors of the horizontal linear module (1.4), the vertical linear module (1.7), the walking wheel drive servo motor (1.1.16), and the right-angle reduction motor (1.1.10). Step S3: Set initial parameters on the host computer interface, including: scanning resolution, and motor speeds of the horizontal linear module servo motor (1.4), vertical linear module servo motor (1.7), walking wheel drive servo motor (1.1.16), and right angle reduction motor (1.1.10). In step S4, the host computer controls the height of the industrial wide-format CIS line scan camera (1.21) from the scanned artwork using the vertical linear module servo motor (1.7) according to the initial parameters, and controls the scanning speed using the horizontal linear module servo motor (1.4). During the scanning process of the industrial wide-format CIS line scan camera (1.21), the walking wheel drive servo motor (1.1.16) stops rotating, that is, the large-format scanning device remains stationary. When the industrial wide-format CIS line scan camera (1.21) moves from the zero position of the horizontal linear module (1.10) to the positive limit position or moves to the specified distance, it indicates that one scan is completed. In step S5, the industrial wide-format CIS line scan camera (1.21) returns to the zero position of the horizontal linear module (1.10) while maintaining its vertical height. At the same time, the servo motor (1.1.16) driven by the walking wheel rotates, causing the large-format scanning device to advance one scanning width and then stop. The industrial wide-format CIS line scan camera (1.21) moves from the zero position of the horizontal linear module (1.10) to the positive limit position to perform the next scan. This cycle continues until all scans are completed. Step S6: The host computer stitches together the scanned images from each scan to obtain a complete scanned image and saves the scanned image. Step S7: When all scanning tasks are completed, the vertical linear module servo motor (1.7) rotates, controlling the industrial wide-format CIS line scan camera (1.21) to return to the zero position of the vertical linear module (1.6), the horizontal linear module servo motor (1.4) rotates, controlling the industrial wide-format CIS line scan camera (1.21) to return to the zero position of the horizontal linear module (1.10), and the walking wheel drive servo motor (1.1.16) rotates, controlling the large-format scanning device to return to its original position and stop. During the scanning process, the positive and negative limit switches and the zero limit switch of the vertical linear module (1.6) and the horizontal linear module (1.10) monitor in real time whether the industrial wide-format CIS line scan camera (1.21) reaches the shortest and longest stroke, thereby controlling the movement range of the industrial wide-format CIS line scan camera (1.21) and ensuring the safety of operation.

9. A scanning method based on a large-format scanning device according to claim 8, characterized in that, Also includes: A method for manually moving the position of the large-format scanning device without power supply includes the following steps: Step 1, press the control wheel on the control panel (3). 1.1.4) The descent button controls the rotation of the right-angle geared motor (1.1.10), which in turn extends the lifting rod of the worm gear jack (1.1.11), causing the lifting beam (1.1.3) and the small caster wheel (1.1.4) to descend together; when the small caster wheel (1.1.4) contacts the ground, it lifts the planetary geared travel wheel (1.1.2) and the large caster wheel (1.1.15) off the ground; Step 2: The optical axis thrust ring (1.1.8) presses down the lower limit limit switch (1.1.9) and triggers the lower limit signal. The small universal wheel (1.1.4) reaches the lowest point, and the right angle reduction motor (1.1.10) stops rotating. Step 3: Manually push the large-format scanning device to the designated position. The small caster wheel (1.1.4) enables the large-format scanning device to move in any direction in the horizontal plane and turn on the spot. Step 4: When scanning is required, the operator pushes the large-format scanning device to the designated position, presses the button on the operating table (3) to control the small universal wheel (1.1.4) to rise, controls the right-angle reduction motor (1.1.10) to rotate, thereby causing the lifting rod of the worm gear lift (1.1.11) to retract, causing the lifting beam (1.1.3) and the small universal wheel (1.1.4) to rise together. When the optical shaft thrust ring (1.1.8) presses up the upper limit limit switch (1.1.13) to trigger the upper limit signal, the small universal wheel (1.1.4) reaches the highest point, and the right-angle reduction motor (1.1.10) stops rotating.

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