Outer wall repairing machine for preventing and treating building cracking
By designing an exterior wall repair machine for preventing building cracks, which automatically removes and applies wall plaster, the problem of increased risks associated with manual high-altitude operations is solved, achieving both safety and comprehensiveness in wall repair.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DONGSHA CONSTR ENG CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-01
AI Technical Summary
The current process of repairing building walls often involves manual high-altitude operations, which increases the risk of accidents and makes it difficult to carry out controlled automatic repairs.
An exterior wall repair machine for preventing building cracks has been designed, including a repair body, a two-way mounting frame, a repair frame, a monitoring camera, a scraper, a drain trough, a return water pipe, and other components. It reduces the risk of working at heights by automatically removing wall plaster and applying wall paint.
Modular wall repair was achieved, avoiding the risk of falling objects from heights, ensuring the comprehensiveness and safety of the repair, and reducing the dangers of workers operating at heights.
Smart Images

Figure CN224187235U_ABST
Abstract
Description
An exterior wall repair machine for preventing building cracks Technical Field
[0001] This utility model relates to the field of building wall repair technology, specifically to an exterior wall repair machine for preventing building cracks. Background Technology
[0002] An exterior wall repair machine is a device used for repairing cracks in exterior walls. For smaller cracks, the machine can be used to clean the cracks, then fill them with specialized repair materials such as polymer mortar or sealant, and grind the surface smooth to prevent moisture penetration and further cracking. For larger cracks, the machine can be used to drill holes and then inject specialized grout, such as epoxy resin or polyurethane, into the cracks. After curing, the holes are sealed, enhancing the integrity and strength of the wall. For structural cracks, the machine can be used to install reinforcing bars or steel plates, fixing them to the wall through welding, anchoring, or other methods to improve the wall's load-bearing capacity and crack resistance.
[0003] In existing technologies, manual high-altitude operations are often used in the repair of building walls, which increases the risk of the operation and makes it difficult to conveniently and automatically repair cracked wall surfaces. Therefore, we have made improvements and proposed an exterior wall repair machine for preventing building cracks. Summary of the Invention
[0004] The purpose of this utility model is to address the problem that current building wall repair designs often rely on manual high-altitude operations, which increases the risk of the operation and makes it difficult to conveniently and automatically repair cracked wall surfaces.
[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0006] An exterior wall repair machine for preventing building cracks, in order to improve the above-mentioned problems.
[0007] The application is as follows:
[0008] An exterior wall repair machine for preventing building cracks includes a repair body, a two-way mounting frame, and a repair frame. The two-way mounting frame is fixed to the outer surface of the front end of the repair body. A monitoring camera is installed at the inner end of the repair frame. A drainage trough is installed at the lower inner end of the repair frame. A roller brush and a robotic arm are installed at the upper inner end of the repair frame. A scraper is installed at the front end of the repair frame. A two-way screw is installed at the upper end of the scraper. A linkage motor is installed at one end of the two-way screw. A return water pipe is installed at the lower end of the drainage trough. An inclined plate is installed at the front end of the repair frame. A silicone pad is installed on the outer surface of the front end of the repair frame. An annular cylinder is installed at the bottom end of the repair frame. A baffle assembly is installed at the outer end of the annular cylinder. The baffle assembly includes multiple baffles. A positioning ring is installed at the upper end of each baffle. A linkage rope passes through the inner end of the positioning ring. Multiple limit springs are wrapped around the linkage rope. The movable end of the linkage rope is wound around a rotating rod. A connecting motor is movable at the outer end of the rotating rod. A positioning rod is fixed at the fixed end of the linkage rope. The positioning rod is fixed at the fixed end of the baffle assembly.
[0009] As a preferred technical solution of this application, the number of blades is set to two sets, and the two sets of blades slide left and right along the bidirectional lead screw, and the linkage motor drives the bidirectional lead screw to rotate.
[0010] As a preferred technical solution of this application, the bidirectional mounting frame is fixed on the front outer surface of the repair body, the repair frame and the repair body are movably connected by a hinged lifting mechanism, and the bidirectional mounting frame is fixed to the building wall.
[0011] As a preferred technical solution of this application, the drain trough and the return water pipe are connected in a through connection, and a water pump is provided on the return water pipe.
[0012] As a preferred technical solution of this application, the silicone pad is attached to the outer end of the prevention wall, and the upper end of the inclined plate is attached to the lower end of the prevention wall.
[0013] As a preferred technical solution of this application, the ring cylinder is fixed at the lower end of the repair frame, and multiple sets of baffles in the baffle group rotate along the ring cylinder, with the first set of baffles fixed inside the ring cylinder.
[0014] As a preferred technical solution of this application, the limiting springs are configured in multiple sets, with the two ends of each set of limiting springs fixed on two adjacent sets of positioning rings, and connected to a motor to drive the rotating rod to rotate.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] In the scheme of this application:
[0017] The automatic wall plaster removal and repair device avoids the need for workers to work at heights, ensures modular repair of the wall surface, and effectively avoids the risk of falling objects when removing cracked wall plaster. Attached Figure Description
[0018] Figure 1 is a schematic diagram of the overall structure of an exterior wall repair machine for preventing building cracks provided in this application;
[0019] Figure 2 is a side sectional view of the repair frame of an exterior wall repair machine for preventing building cracks provided in this application;
[0020] Figure 3 is a schematic diagram of the top cross section of the repair frame of an exterior wall repair machine for preventing building cracks provided in this application;
[0021] Figure 4 is an enlarged structural schematic diagram of A in Figure 3 of an exterior wall repair machine for preventing building cracks provided in this application;
[0022] Figure 5 is an enlarged structural schematic diagram of the movable end of the baffle assembly of an exterior wall repair machine for preventing building cracks provided in this application;
[0023] Figure 6 is an enlarged structural schematic diagram of the positioning ring and limiting spring in Figure 5 of an exterior wall repair machine for preventing building cracks provided in this application.
[0024] The image shows:
[0025] 1. Repair body; 2. Repair frame; 3. Scraper; 4. Two-way lead screw; 5. Linkage motor; 6. Two-way mounting bracket; 7. Drainage trough; 8. Return water pipe; 9. Inclined plate; 10. Silicone pad; 11. Baffle assembly; 12. Ring cylinder; 13. Connecting motor; 14. Rotating rod; 15. Linkage rope; 16. Positioning ring; 17. Limiting spring; 18. Positioning rod. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] As shown in Figures 1-6, this embodiment proposes an exterior wall repair machine for preventing building cracks, including a repair body 1, a two-way mounting frame 6, and a repair frame 2. The two-way mounting frame 6 is fixed to the outer surface of the front end of the repair body 1. A monitoring camera is installed at the inner end of the repair frame 2. A drainage trough 7 is installed at the lower inner end of the repair frame 2. A roller brush and a robotic arm are installed at the upper inner end of the repair frame 2. A scraper 3 is installed at the front end of the repair frame 2. A two-way lead screw 4 is installed at the upper end of the scraper 3. A linkage motor 5 is installed at one end of the two-way lead screw 4. A return water pipe 8 is installed at the lower end of the drainage trough 7. The front end of the repair frame 2 is equipped with... The inclined plate 9 and the outer surface of the front end of the repair frame 2 are provided with a silicone pad 10. The bottom end of the repair frame 2 is provided with a ring cylinder 12. The outer end of the ring cylinder 12 is provided with a baffle group 11. The baffle group 11 includes multiple baffles. The upper end of each baffle is provided with a positioning ring 16. The inner end of the positioning ring 16 is through which a linkage rope 15 passes. Multiple limit springs 17 are wrapped on the linkage rope 15. The movable end of the linkage rope 15 is wound around the rotating rod 14. The outer end of the rotating rod 14 is connected to a motor 13. The fixed end of the linkage rope 15 is fixed with a positioning rod 18. The positioning rod 18 is fixed to the fixed end of the baffle group 11.
[0030] The bidirectional mounting bracket 6 is fixed to the outer surface of the front end of the repair machine body 1, providing a base for the installation and connection of the repair machine; the repair frame 2 serves as a working component, with a monitoring camera inside for observing the working area; the drain trough 7 is used to handle liquids during the construction process; the roller brush and robotic arm are used for wall repair operations; the scraper 3 is used to remove wall plaster; the bidirectional lead screw 4 and the linkage motor 5 control the movement of the scraper 3; and the return water pipe 8 works with the drain trough 7 to achieve liquid circulation. These components work together to form a complete repair device.
[0031] The number of blades 3 is set to two sets. The two sets of blades 3 slide left and right along the bidirectional lead screw 4, and the linkage motor 5 drives the bidirectional lead screw 4 to rotate.
[0032] The two sets of scraper blades 3 slide left and right along the bidirectional lead screw 4, and the linkage motor 5 drives the bidirectional lead screw 4 to rotate. This structural design allows the scraper blades 3 to cover a certain width of the wall surface, effectively improving the efficiency and coverage of removing wall plaster, and ensuring that the wall plaster in the selected area can be completely removed.
[0033] The bidirectional mounting bracket 6 is fixed to the front outer surface of the repair body 1. The repair frame 2 and the repair body 1 are movably connected by a hinged lifting mechanism. The bidirectional mounting bracket 6 is fixed to the building wall.
[0034] The bidirectional mounting bracket 6 is fixed to the outer surface of the front end of the repair machine body 1 and can automatically adjust the installation direction. After being connected to the building wall, it provides a stable support for the repair machine on the one hand, and can adjust the angle according to actual needs on the other hand, so that the repair frame 2 can accurately reach the cracked part of the wall. The repair frame 2 and the repair machine body 1 are connected by a hinged lifting mechanism, so that the repair frame 2 can be flexibly moved to different positions for repair work.
[0035] The drain trough 7 and the return water pipe 8 are connected in a through connection, and a water pump is installed on the return water pipe 8.
[0036] The drain trough 7 is connected to the return water pipe 8. The water pump is on the return water pipe 8. When the wall is wetted by the water spraying method during construction, the water can be collected through the drain trough 7 and recycled along the return water pipe 8 by the water pump. This not only saves water resources, but also reasonably treats the wastewater generated during construction and keeps the construction site relatively clean.
[0037] The silicone pad 10 is attached to the outer end of the prevention wall, and the upper end of the inclined plate 9 is attached to the lower end of the prevention wall.
[0038] The silicone pad 10 is attached to the outer end of the protective wall to buffer and seal, preventing liquid or debris from leaking out during construction. The upper end of the inclined plate 9 is attached to the lower end of the protective wall, which helps to guide debris generated during construction to a specific area for easy collection and cleaning, while also protecting the wall below from damage to a certain extent.
[0039] The ring cylinder 12 is fixed at the lower end of the repair frame 2. Multiple sets of baffles in the baffle group 11 rotate along the ring cylinder 12, and the first set of baffles is fixed inside the ring cylinder 12.
[0040] The limiting springs 17 are set in multiple groups, and the two ends of each group of limiting springs 17 are fixed on the two adjacent groups of positioning rings 16 respectively, and connected to the motor 13 to drive the rotating rod 14 to rotate.
[0041] The ring cylinder 12 is fixed to the lower end of the repair frame 2, providing rotational support for the baffle assembly 11. Multiple baffles within the baffle assembly 11 rotate along the ring cylinder 12. The first set of baffles is fixed inside the ring cylinder 12 and connected to the motor 13, which drives the rotating rod 14 to rotate. Through the cooperation of the linkage rope 15, the positioning ring 16, and the limiting spring 17, the baffle assembly 11 can open or retract under the spring's movement. When open, it wraps around the lower end of the corresponding wall, effectively preventing debris from falling and injuring people during the treatment process, thus providing safety protection.
[0042] The bidirectional mounting bracket 6 automatically adjusts its installation direction and is fixed at both ends of the window frame, providing a stable installation position for the repair machine. The repair machine body 1 moves the repair frame 2 to the cracked area of the wall. The connecting motor 13 drives the baffle assembly to open for protection. The monitoring camera monitors the construction process and guides the scraper 3 to remove the wall plaster. The scraper 3 works under the action of the bidirectional screw 4 and the linkage motor 5. The drain trough 7, return water pipe 8, and water pump work together to treat the construction water. The robotic arm and roller brush apply wall paint to the scraped area under monitoring and automated control. Finally, the entire repair work is completed by raising the repair frame 2, sweeping away the fallen pieces on the baffle assembly, and retracting the baffle assembly. The coordinated work of all components achieves advantages such as reducing the danger of working at height, ensuring comprehensive and stable wall cleaning, and avoiding outdoor high-altitude operations for workers.
[0043] One embodiment is used for repairing cracked wall plaster:
[0044] (1) Preparation
[0045] 1. On-site inspection: Construction personnel arrive at the building site to be repaired, conduct a detailed inspection of the cracked wall surface, determine the location, extent and severity of the cracks, and record relevant information to provide an accurate basis for subsequent construction.
[0046] 2. Equipment Inspection and Assembly: Inspect all components of the exterior wall repair machine for integrity, including the repair body 1, the two-way mounting frame 6, the repair frame 2, and all auxiliary devices. After confirming that everything is in order, install the two-way mounting frame 6 onto the outer surface of the front end of the repair body 1, ensuring a secure connection.
[0047] 3. Tools and materials preparation: Prepare the necessary auxiliary tools for construction, such as cleaning brushes, buckets, etc., and prepare sufficient wall paint to ensure that the quality and color of the wall paint match the original wall surface.
[0048] (2) Install the two-way mounting bracket 6
[0049] 1. Move the two-way mounting bracket 6 to the upper and lower ends of the window frame on the cracked floor. The two-way mounting bracket 6 utilizes its own automatic adjustment function to adapt to the angle difference between the window frame and the wall, ensuring stable installation and correct orientation;
[0050] 2. Use the matching fixing devices (such as expansion bolts) to firmly fix the two-way mounting bracket 6 to the building wall to ensure that it will not loosen during subsequent construction.
[0051] (3) Connect the power supply and debug the equipment
[0052] 1. Connect the repair unit 1 reliably to the external power supply. After turning on the power, start the repair unit 1 and check whether each component can operate normally.
[0053] 2. Test the monitoring camera to ensure that its image is clear and can cover the wall area selected in repair box 2, so as to observe the construction situation in real time.
[0054] 3. Start the connecting motor 13 and check whether the baffle group 11 can open and close smoothly under the action of the linkage spring to ensure that the protection function is normal.
[0055] 4. Start the linkage motor 5 and observe whether the two sets of scraper blades 3 can slide smoothly left and right along the double-acting screw 4 to ensure that the function of removing wall plaster is normal.
[0056] (4) Repairing the placement and protective measures of frame 2
[0057] 1. The repair frame 2 is moved by the repair body 1 so that it accurately reaches the cracked part of the wall.
[0058] 2. Restart the connecting motor 13, which will cause the baffle assembly 11 to open under the action of the linkage spring, tightly wrapping around the lower end of the corresponding wall to form an effective protective barrier and prevent debris from falling and injuring people during construction.
[0059] (5) Remove the wall plaster
[0060] 1. Under the real-time monitoring of the surveillance camera, the scraper 3 is started to work. The linkage motor 5 drives the double-acting screw 4 to rotate, causing the two sets of scrapers 3 to slide left and right along the double-acting screw 4, gradually removing the cracked wall plaster located in the area selected by the repair frame 2.
[0061] 2. Depending on the dryness and firmness of the wall plaster, apply a water spraying method as needed. Turn on the water pump to deliver water from the return pipe 8 into the repair frame 2 to wet the cracked wall surface. The wetted water is collected through the drain trough 7, filtered, and then recycled by the water pump along the return pipe 8.
[0062] 3. During the removal process, the construction workers closely monitored the surveillance footage to ensure that the selected wall area was completely and cleanly removed, leaving no blind spots.
[0063] (6) Wall cleaning and painting
[0064] 1. After removing the wall plaster, use a cleaning brush to preliminarily clean the removed area to remove any remaining debris and dust.
[0065] 2. The area that was scraped is then coated with wall paint using a robotic arm and a roller brush. The robotic arm moves according to a preset program and trajectory, while the roller brush evenly applies the paint to the wall surface. The coating process is also monitored to ensure that the paint thickness is uniform and that no areas are missed.
[0066] (7) Finishing work
[0067] 1. After the wall paint is applied, lift the repair frame 2 upwards to detach the baffle assembly 11 from the wall.
[0068] 2. Workers stand inside the window frame and use brooms and other tools to sweep away the fallen pieces located on the baffle assembly and clean the work site.
[0069] 3. Start the connecting motor 13, drive the rotating rod 14 to rotate, so that the linkage rope 15 is retracted, and the baffle group 11 is gradually retracted under the action of the limit spring 17.
[0070] 4. Turn off the power to the repair unit 1, remove the fixing device between the two-way mounting bracket 6 and the building wall, carefully retrieve the entire repair unit, and store it properly for future use.
[0071] In use, the following steps are performed: First, the bidirectional mounting bracket 6 is installed at both ends of the window frame of the cracked floor. The bidirectional mounting bracket 6 can automatically adjust its installation direction. After fixing the bidirectional mounting bracket 6, the power line is connected, and the repair unit 1 is started. The repair unit 1 moves the repair frame 2 to the corresponding cracked part of the wall. At this time, the motor 13 is connected and runs, causing the baffle assembly to open under the action of the linkage spring, wrapping around the lower end of the corresponding wall to prevent debris from falling during the treatment process. Under the monitoring of the surveillance camera, the scraper 3 is started to remove the cracked wall plaster located in the area selected by the repair frame 2. During the removal process, the water spraying method used in the prior art may be used to wet the cracked wall before removal. (The water sprayed can be filtered through the drain trough 7 and then circulated along the return pipe 8 by the water pump. The outlet of the return pipe 8 can be placed inside the repair frame 2, or it can be removed at the end of the process.) (All water in the drain trough 7 is removed) This process ensures that the selected wall surface is completely removed, facilitating the application of new paint to the removed areas using a robotic arm and roller. When cleaning cracked walls, modular cleaning is used to reduce the risk of large-scale wall paint falling off during high-altitude operations. Secondly, it also ensures the overall stability of local wall cleaning. The application of paint by the robotic arm and roller is monitored and automated, allowing workers to monitor the operation from inside, avoiding the high-altitude danger of workers climbing outside to operate. At the same time, the automatic opening and closing baffle assembly at the bottom reduces the risk of falling from height during the wall repair process, causing the paint to fall directly onto the baffle assembly. At the end of the entire wall repair, the repair frame 2 can be raised, and the worker stands inside the window frame to first sweep away the fallen pieces located on the baffle assembly, then retract the entire baffle assembly, and finally retrieve the repair device.
[0072] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.
Claims
1. An exterior wall repair machine for preventing building cracks, comprising a repair body (1), a two-way mounting frame (6), and a repair frame (2), characterized in that, The bidirectional mounting bracket (6) is fixed to the front outer surface of the repair body (1). The inner end of the repair frame (2) is equipped with a monitoring camera. The lower inner end of the repair frame (2) is equipped with a drain trough (7). The upper inner end of the repair frame (2) is equipped with a roller brush and a robotic arm. The front end of the repair frame (2) is equipped with a scraper (3). The upper end of the scraper (3) is equipped with a bidirectional lead screw (4). One end of the bidirectional lead screw (4) is equipped with a linkage motor (5). The lower end of the drain trough (7) is equipped with a return water pipe (8). The front end of the repair frame (2) is equipped with a sloping plate (9). The outer surface of the front end of the repair frame (2) is equipped with a silicone pad (10). The bottom end of the frame (2) is provided with a ring cylinder (12), and the outer end of the ring cylinder (12) is provided with a baffle group (11). The baffle group (11) includes multiple baffles. The upper end of each baffle is provided with a positioning ring (16). The inner end of the positioning ring (16) is through a linkage rope (15). Multiple limit springs (17) are wrapped on the linkage rope (15). The movable end of the linkage rope (15) is wound around the rotating rod (14). The outer end of the rotating rod (14) is connected to a motor (13). The fixed end of the linkage rope (15) is fixed with a positioning rod (18). The positioning rod (18) is fixed to the fixed end of the baffle group (11).
2. The exterior wall repair machine for preventing building cracks according to claim 1, characterized in that, The number of the shovels (3) is set to two sets. The two sets of shovels (3) slide left and right along the bidirectional lead screw (4), and the linkage motor (5) drives the bidirectional lead screw (4) to rotate.
3. The building cracking prevention and outer wall repairing machine according to claim 1, characterized in that, The repair frame (2) and the repair body (1) are movably connected by a hinged lifting mechanism, and the bidirectional mounting frame (6) is fixed to the building wall.
4. The building cracking prevention and outer wall repairing machine according to claim 1, wherein The drain trough (7) is connected to the return water pipe (8), and a water pump is provided on the return water pipe (8).
5. The building cracking prevention and outer wall repairing machine according to claim 1, wherein The silicone pad (10) is attached to the outer end of the protective wall, and the upper end of the inclined plate (9) is attached to the lower end of the protective wall.
6. The building cracking prevention and outer wall repairing machine according to claim 1, wherein The ring cylinder (12) is fixed at the lower end of the repair frame (2), and multiple sets of baffles in the baffle group (11) rotate along the ring cylinder (12), with the first set of baffles fixed inside the ring cylinder (12).
7. The building cracking prevention and outer wall repairing machine according to claim 1, wherein The limiting springs (17) are set in multiple groups, and the two ends of each group of limiting springs (17) are respectively fixed on the two adjacent groups of positioning rings (16). The connecting motor (13) drives the rotating rod (14) to rotate.