A visual-based ancient building restoration method

Abstract

The application relates to a visual-based ancient building repairing method, which comprises the following steps: three-dimensional modeling of an ancient building through a three-dimensional modeling system, calculation of a cutting path of a wire saw cutting device on the ancient building according to the three-dimensional model, clamping and fixing of upper and lower clamps on the upper and lower ends of the ancient building respectively, inflation of the inside of a flexible clamping bag, adhesion of the inner side wall of the flexible clamping bag to the outer wall of the ancient building, and then filling of sand in the inside of the flexible clamping bag, cutting of the inside of the ancient building to be repaired according to the calculated cutting path, filling of concrete, gel and other fillers in the inside of the ancient building, replacement of the ancient building inside which has been rotten and fragile, inflation and deformation of the flexible clamping bag to adhere to the surface of the ancient building in the process of cutting the inside of the ancient building, and then filling of sand in the inside of the flexible clamping bag, so that the flexible clamping bag and the sand cooperatively wrap the outer surface of the ancient building, and damage of the outer surface of the ancient building caused by vibration in the cutting process is avoided.

Description

Technical Field

[0001] This invention relates to a vision-based method for the restoration of ancient buildings, belonging to the field of ancient building restoration technology. Background Technology

[0002] Ancient buildings, exposed to the natural environment for extended periods, suffer varying degrees of damage from the cycles of wet and dry weathering, freeze-thaw cycles, and harmful ions from acid rain. With increasing awareness of the importance of preserving ancient cultural relics, the restoration of ancient buildings is receiving more and more attention. Wooden columns in ancient buildings, such as corridor pillars, primarily serve a supporting function. Due to their age, decay, and insect infestation, some sections of their structure become fragile, requiring timely reinforcement and restoration. Existing reinforcement devices for ancient buildings only provide external support for the wooden columns but cannot control internal corrosion, resulting in restorations that fail to maintain the original form and negatively impact the building's visual appeal.

[0003] Some ancient buildings have patterns and other structures carved on their surfaces, but their internal structures are fragile due to factors such as decay and insect infestation. At the same time, these ancient buildings bear a large load, so they need to be repaired and reinforced without damaging their surface structure. Summary of the Invention

[0004] The purpose of this invention is to provide a vision-based method for the restoration of ancient buildings, in order to solve the problems mentioned in the background art.

[0005] The technical solution of the present invention is as follows:

[0006] A vision-based method for the restoration of ancient buildings includes the following steps:

[0007] The ancient building is modeled in three dimensions using a 3D modeling system, and the cutting path of the wire saw cutting device is calculated based on the 3D model.

[0008] The upper and lower clamps are respectively clamped and fixed at the upper and lower ends of the ancient building, so that the flexible clamp between the upper and lower clamps wraps the outer wall of the ancient building;

[0009] The flexible clamping bag is inflated with air so that the inner wall of the flexible clamping bag fits against the outer wall of the ancient building. Then the flexible clamping bag is filled with sand.

[0010] The clamped ancient building is placed on the planar moving component and cut in conjunction with the wire saw cutting device.

[0011] Preferably, the flexible clamp bag includes an inner and outer elastic surface and a base surface, the base surface and the elastic surface forming a hollow bag structure that isolates the inside from the outside, and a telescopic component is connected between the upper clamp and the lower clamp, the telescopic component being located outside the base surface as a support.

[0012] Preferably, the elastic surface is filled with a temperature-sensitive gel.

[0013] Preferably, the upper clamp and the lower clamp have the same structure. The upper clamp and / or the lower clamp include two sets of clamping seats that are hinged to each other. The two sets of clamping seats are connected and adjusted by a clamping assembly to form an angle. A gap is left between the free ends of the two sets of clamping seats for the cutting wire of the wire saw to pass through.

[0014] Preferably, a heating wire located inside the flexible clamping bag is connected between the upper clamp and the lower clamp.

[0015] Preferably, a vibrator is installed on the heating line.

[0016] Preferably, the clamping seat of the lower clamp includes a lower clamping seat body, the top opening of the lower clamping seat body is in communication with the interior of the flexible clamping bag, and the bottom opening of the lower clamping seat body is opened or closed through a lower seat cover.

[0017] Preferably, the clamp of the upper clamp includes an upper clamp body, the bottom opening of the upper clamp body is connected to the inside of the flexible clamp bag, the top opening of the upper clamp body is opened or closed through an upper cover, and an air nozzle is installed on the upper clamp body.

[0018] Preferably, the bottom opening of the upper clamp body is opened and closed through a flip door, and the flip door and the upper clamp cover are interlocked by a linkage component.

[0019] Preferably, the rotating door is used to open and close the bottom opening of the upper clamp body, and the linkage component includes a matching lock cylinder and a key. The lock cylinder is coaxially connected to the rotating door, and the key is rotatably connected to the upper cover. When the upper cover closes the top opening of the upper clamp body, the key is inserted into the lock cylinder.

[0020] The present invention has the following beneficial effects:

[0021] The ancient building to be restored is scanned using visual recognition to create a 3D model. This 3D model facilitates the calculation of the most suitable cutting path for the wire saw cutting device. Based on the calculated cutting path, the interior of the ancient building is cut. Afterwards, the interior of the ancient building is filled with concrete, gel, or other fillers to replace the long-rotted and fragile interior.

[0022] During the cutting process inside the ancient building, flexible clamping bags are inflated and deformed to fit the surface of the ancient building. Sand is then filled into the flexible clamping bags, so that the flexible clamping bags and sand work together to wrap the outer surface of the ancient building, avoiding damage to the outer surface of the ancient building caused by vibration during the cutting process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the cooperation between the planar moving component, the clamping component, and the wire saw cutting device of the present invention;

[0024] Figure 2 This is a schematic diagram of the clamping component structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the upper / lower clamp structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the flexible clip bag structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the clamping seat structure of the clamp of the present invention;

[0028] Figure 6 This is a schematic diagram of the heating wire structure between the upper and lower clamps of the present invention;

[0029] Figure 7 This is a schematic diagram of the clamping seat structure of the clamp of the present invention.

[0030] The reference numerals in the figure are as follows:

[0031] 1. Planar moving component; 2. Clamping component; 3. 3D modeling system; 4. Wire saw cutting device; 5. Heating wire; 6. Upper clamp; 61. Clamp base; 611. Upper clamp base body; 612. Upper base cover; 613. Air nozzle; 614. Flip-up door; 615. Lock cylinder; 616. Key; 62. Clamping component; 7. Lower clamp; 711. Lower clamp base body; 712. Lower base cover; 8. Flexible clamping bag; 81. Base surface; 82. Elastic surface; 83. Sand; 84. Temperature-sensitive gel; 9. Telescopic component; 100. Ancient building. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] Example: Figure 1-7 As shown:

[0034] First, the ancient building 100 to be restored is scanned by the 3D modeling system 3 to obtain the point cloud data of the ancient building, thereby establishing a 3D model of the ancient building 100 to be restored. Based on the 3D model of the ancient building 100, the optimal cutting path of the wire saw cutting device 4 is calculated without damaging the outer surface of the ancient building 100 and while retaining the minimum thickness. The upper and lower surfaces of the ancient building 100 are unimportant surfaces and do not have carved patterns or other structures.

[0035] It should be noted that the wire saw cutting device 4 cuts into the interior of the ancient building 100 from the side without any carved patterns / unimportant features. The 3D modeling system 3 is existing technology, and this solution is an application of it.

[0036] like Figure 1 As shown, the planar moving component 1 includes an X-axis moving module and a Y-axis moving module. The planar moving component 1 is used to move the clamped ancient building 100 in the plane. The cutting line of the wire saw cutting device 4 is set vertically. The wire saw cutting device 4 and the planar moving component 1 work together to cut the ancient building 100.

[0037] like Figure 2 As shown, the clamping assembly 2 includes an upper clamp 6 and a lower clamp 7. The upper clamp 6 clamps the upper end of the ancient building 100, and the lower clamp 7 clamps the lower end of the ancient building 100. Several telescopic components 9 are connected between the upper clamp 6 and the lower clamp 7. The telescopic components 9 can adopt X-shaped forks to adapt to ancient buildings 100 of different heights.

[0038] like Figure 3 As shown, the upper clamp 6 and / or the lower clamp 7 include two sets of mutually hinged clamps 61. The two sets of mutually hinged clamps 61 are connected by a clamping assembly 62. The clamping assembly 62 includes a threaded rod, a first rotating shaft, and a second rotating shaft. The first rotating shaft is rotatably connected to the clamp 61 on the left side, and the second rotating shaft is rotatably connected to the clamp 61 on the right side. The left end of the threaded rod is fixedly connected to the first rotating shaft, and the threaded rod is threadedly connected to the second rotating shaft. Thus, rotating the threaded rod can adjust the angle between the two sets of clamps 61, thereby facilitating the ancient building 100 to enter and exit the space between the two sets of clamps 61. At the same time, a gap is left between the free ends of the two sets of clamps 61 for the wire saw of the wire saw cutting device 4 to enter and exit.

[0039] like Figure 2 , 4 As shown, a hollow flexible clamping bag 8 is connected between the upper clamping bag 6 and the lower clamping bag 7. The flexible clamping bag 8 includes a base surface 81 and an elastic surface 82. The base surface 81 is located on the outer side of the elastic surface 82, away from the ancient building 100, and the base surface 81 is located on the inner side of the telescopic component 9, close to the ancient building 100.

[0040] In use, the upper clamp 6 is placed on the upper end of the ancient building 100 and the lower clamp is placed on the lower end of the ancient building 100. Then, the external inflation device inflates the flexible clamp bag 8 through the air nozzle 613, so that the elastic surface 82 abuts against the outer wall of the ancient building 100. The elastic surface 82 can deform and fit to the complex outer surface of the ancient building 100, achieving full coverage of the outer surface of the ancient building 100. During this process, the base surface 81 remains unchanged and is supported by the telescopic component 9. Then, the inner cavity of the flexible clamping bag 8 is filled with fine sand, thereby clamping and fixing the ancient building 100. The fine sand filling the flexible clamping bag 8 not only has the characteristics of flexibility, but also has a certain degree of rigidity. Compared with directly using flexible / elastic deformable materials such as sponge to clamp the ancient building 100, it is more rigid and avoids the ancient building 100 shaking after being clamped due to insufficient clamping force. At the same time, the flexible clamping bag 8 filled with fine sand also has a certain degree of flexibility, avoiding damage to the surface of the ancient building 100 caused by rigid clamping, and avoiding vibration damage to the surface of the ancient building 100 during the cutting process.

[0041] A flexible clamping bag 8 is wrapped around the outside of the ancient building 100. After the flexible clamping bag 8 is filled with fine sand, the ancient building 100 is clamped and fixed by the clamping component 2. The clamping component 2 is placed on the planar moving component 1. The cutting line of the wire saw cutting device 4 passes through the gap between the free ends of the two sets of clamping seats 61 and enters the space formed inside the two sets of clamping seats 61, thereby making contact with the ancient building 100. Then, the planar moving component 1 and the wire saw cutting device 4 cut the ancient building 100 according to the cutting path. This hollows out the middle of the ancient building 100, which can be replaced with new materials later.

[0042] Example 2: An improvement based on Example 1:

[0043] like Figure 4 As shown, the elastic surface 82 is hollow inside and contains a temperature-sensitive gel 84. When air is injected into the flexible bag 8, the elastic surface 82 deforms and fits into the ancient building 100. However, since fine sand needs to be filled into the flexible bag 8, there is a gas leakage, which causes the elastic surface 82 to not fit the ancient building 100 perfectly.

[0044] like Figure 6 As shown, multiple heating wires 5 are connected between the clamping base 61 of the upper clamp 6 and the clamping base 61 of the lower clamp 7. The heating wires 5 are located inside the flexible clamping bag 8. After the elastic surface 82 deforms and adheres to the ancient building 100, the heating wires 5 are energized and heated. The temperature-sensitive gel 84 inside the elastic surface 82 is temporarily solidified by the heat, thereby preventing the elastic surface 82 from rebounding due to air leakage during the filling of fine sand. After the fine sand filling is completed, the heating wires 5 are de-energized, and the temperature-sensitive gel 84 gradually cools down and becomes liquid.

[0045] Example 3: Improvements based on Example 1 or 2:

[0046] like Figure 5 As shown, the clamp seat 61 of the lower clamp 7 includes a lower clamp seat body 711, which runs vertically through the lower clamp seat body 711. The upper opening of the lower clamp seat body 711 is connected to the lower end of the flexible clamp bag 8. The lower opening of the lower clamp seat body 711 can be opened or closed by a detachable locking mechanism consisting of a lower seat cover 712 and bolts. The lower opening of the lower clamp seat body 711 is used to discharge fine sand from the flexible clamp bag 8.

[0047] like Figure 7 As shown, the clamp 61 of the upper clamp 6 includes an upper clamp body 611, which extends vertically. The lower opening of the upper clamp body 611 communicates with the upper end of the flexible clamping bag 8. The upper opening of the upper clamp body 611 is detachably locked via an upper cover 612 and bolts. The lower end of the upper clamp body 611 is opened or closed via a flip door 614. Fine sand from the outside first enters the upper clamp body 611 through the upper opening, and then enters the flexible clamping bag 8 through the lower opening. An air nozzle 613 is installed on the upper clamp body 611.

[0048] Example 4: An improvement based on Example 3:

[0049] like Figure 7 As shown, a key 616 is rotatably connected to the upper cover 612, and a lock cylinder 615 is installed in the inner cavity of the upper clamp body 611. The lower end of the lock cylinder 615 is connected to the flip door 614. When the upper cover 612 closes the upper opening of the upper clamp body 611, the key 616 is just inserted into the lock cylinder 615. Then, the key 616 is controlled to rotate in the lock cylinder 615. During this process, the flip door 614 is driven to rotate, thereby opening or closing the lower opening of the upper clamp body 611.

[0050] When the flip door 614 is in the open position of the lower opening of the upper clamp body 611, the upper cover 612 cannot open the upper opening of the upper clamp body 611 because the key 616 cannot disengage from the lock cylinder 615.

[0051] When the flip door 614 is in the closed position of the lower opening of the upper clamp body 611, the key 616 can smoothly disengage from the lock cylinder 615. At this time, the upper cover 612 can be driven to open the upper opening of the upper clamp body 611.

[0052] With the above settings, the flip door 614 and the upper cover 612 can be interlocked, and only one of them can be in the open state at any time, which greatly reduces the leakage of gas in the flexible clamp bag 8 due to operational errors.

[0053] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A visual-based ancient building restoration method, characterized in that, Includes the following steps: The ancient building (100) is modeled in three dimensions using a three-dimensional modeling system (3), and the cutting path of the wire saw cutting device (4) on the ancient building (100) is calculated based on the three-dimensional model. The upper clamp (6) and the lower clamp (7) are respectively clamped and fixed at the upper and lower ends of the ancient building (100), so that the flexible clamp bag (8) between the upper clamp (6) and the lower clamp (7) wraps the outer wall of the ancient building (8); Inflate the inside of the flexible bag (8) so that the inner sidewall of the flexible bag (8) fits against the outer wall of the ancient building (100), and then fill the inside of the flexible bag (8) with sand (83). The clamped ancient building (100) is placed on the planar moving component (1) and cut with the wire saw cutting device (4); The flexible clamp bag (8) includes an elastic surface (82) and a base surface (81) provided inside and outside. The base surface (81) and the elastic surface (82) form a hollow bag structure that isolates the inside from the outside. A telescopic component (9) is connected between the upper clamp (6) and the lower clamp (7). The telescopic component (9) is located outside the base surface (81) as a support. The elastic surface (82) is filled with a thermosensitive gel (84). The upper clamp (6) and the lower clamp (7) have the same structure. The upper clamp (6) and / or the lower clamp (7) include two sets of clamp seats (61) that are hinged to each other. The two sets of clamp seats (61) are connected and adjusted by a clamping assembly (62) to form an angle. A gap is left between the free ends of the two sets of clamp seats (61) for the cutting line of the wire saw cutting device (4) to pass through. The clamp (61) of the lower clamp (7) includes a lower clamp body (711), the top opening of the lower clamp body (711) is connected to the interior of the flexible clamp bag (8), and the bottom opening of the lower clamp body (711) is opened or closed through the lower clamp cover (712). The clamp (61) of the upper clamp (6) includes an upper clamp body (611), the bottom opening of the upper clamp body (611) is connected to the interior of the flexible clamp bag (8), the top opening of the upper clamp body (611) is opened or closed through the upper cover (612), and an air nozzle (613) is installed on the upper clamp body (611).

2. The vision-based ancient building restoration method of claim 1, wherein: A heating wire (5) located inside a flexible clamping bag (8) is connected between the upper clamp (6) and the lower clamp (7).

3. The vision-based ancient building restoration method of claim 2, wherein: A vibrator is installed on the heating line (5).

4. The vision-based ancient building restoration method of claim 2, wherein: The bottom opening of the upper clamp body (611) is opened and closed through a flip door (614), and the flip door (614) and the upper cover (612) are interlocked by a linkage component.

5. The vision-based ancient building restoration method of claim 4, wherein: The rotating door (614) is used to open and close the bottom opening of the upper clamp body (611). The linkage component includes a matching lock cylinder (615) and a key (616). The lock cylinder (615) is coaxially connected to the rotating door (614). The key (616) is rotatably connected to the upper cover (612). When the upper cover (612) closes the top opening of the upper clamp body (611), the key (616) is inserted into the lock cylinder (615).

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