House outer wall repairing device for constructional engineering

Abstract

The invention relates to the field of constructional engineering equipment, and discloses a house outer wall repairing device for constructional engineering, which comprises a box body, a first notch is formed in the middle of the front end of the box body, transmission wheels are movably mounted at four corners in the first notch, and the outer diameters of the transmission wheels are connected through a transmission belt; a movable block is fixedly installed at the outer side end of the transmission belt, a conveying pump is fixedly installed at the top end of the box body, a corrugated pipe is fixedly installed at the output end of the conveying pump, the tail end of the corrugated pipe is fixedly installed on the front side of the movable block and is fixedly provided with a slurry spray head, and a second notch is formed in the lower side of the front end of the box body. And a movable table is movably mounted in the second notch. Through automatic mechanical design, manual high-altitude operation is not needed, damaged wall skin cleaning, slurry spraying and scraping are integrated, meanwhile, waste recycling is completed, the operation safety, efficiency and quality are improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering equipment, and particularly to a device for repairing the outer wall of a building in construction engineering. Background Art

[0002] In the construction field, with the passage of time and the influence of environmental factors, cracks, peeling, damage and other problems are likely to occur on the outer wall of a house, which not only affects the beauty of the building, but may also cause problems such as water seepage and structural safety hazards. Therefore, the repair of the outer wall has become an important part of building maintenance. At present, the repair work of the outer wall of a house mostly relies on manual labor. Workers need to rely on equipment such as hanging baskets and safety ropes to climb on the outer wall of the building, hold tools such as hammers and shovels to clean the damaged wall skin, and then manually apply repair materials. This method has many disadvantages: on the one hand, the high-altitude working environment is dangerous, and workers are easily affected by factors such as wind force and equipment failure, with extremely high safety risks. In recent years, high-altitude falling accidents caused by outer wall repair operations have occurred frequently; on the other hand, manual operation is inefficient, it is difficult to ensure the uniformity of repair quality, and the labor intensity is high, with a long repair period and high cost. Some enterprises have tried to use mechanical equipment to assist in the repair of the outer wall, such as simple wall cleaning robots or spraying equipment. However, the existing equipment has a single function and can often only complete one of the cleaning or spraying tasks, and cannot realize the integrated operation of repair processes such as cleaning, spraying, and scraping; at the same time, these equipment have deficiencies in waste recycling and treatment, and the debris and waste generated during the operation are easily scattered, which not only pollutes the environment, but may also pose a safety threat to pedestrians and vehicles below. In addition, most of the existing equipment requires manual assistance for movement and operation, and has not fundamentally reduced the degree of manual participation and labor intensity. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a device for repairing the outer wall of a building in construction engineering, which solves the problems of high safety risks, low efficiency, difficult quality unification and high labor intensity in traditional manual outer wall repair operations, and at the same time overcomes the defects of single function and insufficient waste treatment of existing mechanical equipment, and realizes the integrated and efficient operation of outer wall cleaning, spraying, scraping and waste recycling.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A building engineering exterior wall repair device includes a box body. A first notch is opened in the middle of the front end of the box body. Transmission wheels are movably installed at the four corners inside the first notch. The outer diameters of the transmission wheels are connected by a transmission belt. An activity block is fixedly installed at the outer side end of the transmission belt. A delivery pump is fixedly installed at the top of the box body. The output end of the delivery pump is fixedly installed with a corrugated pipe. The end of the corrugated pipe is fixedly installed on the front side of the activity block and is fixedly installed with a mud spray head. A second notch is opened at the lower side of the front end of the box body. An activity table is movably installed inside the second notch. Sleeves are fixedly installed on the upper and lower sides inside the activity table. Slide rods are movably installed on one side inside each sleeve. The ends of the slide rods extend to the outside of the sleeves and are fixedly installed with hammer heads. Cylinders are movably installed on the other side inside each sleeve. Pistons are movably installed inside the cylinders. A striking hammer is fixedly installed at one end of each piston close to the slide rod.

[0005] A mud storage tank is opened inside the box body. A feeding port is opened at the top of the mud storage tank and is communicated with the outside. A feeding pipe is fixedly installed at the input end of the delivery pump and the end of the feeding pipe extends into the mud storage tank. A first motor is fixedly installed on one side inside the first notch. The driving end of the first motor is fixedly installed in the middle of the driving side of the transmission wheel. A scraping plate is fixedly installed at the position below the first notch on the front end of the box body.

[0006] A lead screw is movably installed on one side inside the second notch. The middle of the lead screw is threadedly connected to one side inside the activity table. A guide rod is movably installed on the other side inside the second notch. The middle of the guide rod is movably installed on the other side inside the activity table. A second motor is fixedly installed on one side of the box body. The driving end of the second motor is fixedly installed at one end of the lead screw.

[0007] A fixing frame is fixedly installed at the rear end of the activity table. A DC motor is fixedly installed in the middle of the rear end of the fixing frame. The driving end of the DC motor extends into the fixing frame and is fixedly installed with a main shaft. A rotating body is fixedly installed on the outer diameter of the main shaft. An inclined ball groove is opened on the outer diameter of the rotating body. An inclined bearing block is movably installed outside the ball groove. Swing rods are fixedly installed at both ends of the inclined bearing block. The ends of the swing rods are movably installed at the rear ends of the corresponding cylinders.

[0008] The outer diameters of the slide rods on the side close to the cylinders are connected to the inner walls of the sleeves through return springs. Shoveling plates are fixedly installed on both sides of the bottom of the activity table.

[0009] A waste recycling tank is fixedly installed at the bottom end of the box body. Openings are provided on both sides inside the second slot opening, and the bottoms of the openings are both communicated with the inside of the waste recycling tank. Universal wheels are fixedly installed at the four corners of the front end of the box body.

[0010] It further includes a bracket. A rope roller is movably installed on the upper side inside the bracket. Steel ropes are wound around the outer diameters on both sides of the rope roller. Two diagonal braces are fixedly installed on one side of the bracket close to the box body. Guide wheels are movably installed at the tops of the diagonal braces. The ends of the steel ropes all bypass the outer diameters of the corresponding guide wheels and are fixedly installed at the top end of the box body.

[0011] A third motor is fixedly installed on the lower side inside the bracket. The driving end of the third motor extends to the outside of the bracket and is fixedly installed with a driving wheel. One end of the rope roller extends to the outside of the bracket through a connecting shaft and is fixedly installed with a driven wheel. A synchronous belt is connected between the outer diameters of the driving wheel and the driven wheel.

[0012] The present invention provides an exterior wall repair device for construction projects. It has the following beneficial effects: 1. The present invention abandons the traditional manual climbing operation mode on the exterior wall. By fixing a bracket on the roof and using structures such as steel ropes, rope rollers, and guide wheels to control the movement of the box body along the exterior wall, the operators do not need to be in a high-altitude dangerous environment, greatly reducing safety risks such as falling from a height and providing reliable safety protection for the exterior wall repair work.

[0013] 2. With the unique impact structure driven by a DC motor, the hammer head can continuously hammer the damaged exterior wall to shake off the damaged wall skin that has not fallen off. At the same time, by driving the screw rod and the guide rod in cooperation by the second motor to control the left and right movement of the movable table and combining the control of the up and down position of the box body by the third motor, a comprehensive and efficient cleaning of the damaged exterior wall can be realized, laying a good foundation for subsequent repair.

[0014] 3. The present invention pumps out the concrete slurry in the slurry storage tank through a delivery pump and sprays it onto the surface of the exterior wall through a corrugated pipe and a slurry spray head. The first motor drives the driving wheel and the transmission belt to drive the movable block and the slurry spray head to move left and right. Combining the up and down movement of the box body, the slurry spraying operation can be completed evenly and accurately. The scraping plate operates synchronously during the movement of the box body to scrape the sprayed slurry flat in time, ensuring that the repair effect is flat and beautiful and improving the repair quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a schematic internal structure diagram of the first slot opening in the present invention; Figure 3 is a schematic internal structure diagram of the second slot opening in the present invention; Figure 4 Schematic diagram of the internal structure of the movable table in the present invention; Figure 5 Schematic diagram of the structure of the box body in the present invention.

[0016] Wherein, 1. Box body; 2. First notch; 3. Driving wheel; 4. Driving belt; 5. First motor; 6. Movable block; 7. Delivery pump; 8. Bellows; 9. Mud spray head; 10. Mud storage tank; 11. Feeding port; 12. Feeding pipe; 13. Second notch; 14. Lead screw; 15. Movable table; 16. Guide rod; 17. Sleeve; 18. Slide bar; 19. Hammer head; 20. Cylinder block; 21. Piston; 22. Striking hammer; 23. Fixed frame; 24. DC motor; 25. Main shaft; 26. Rotating body; 27. Tapered bearing block; 28. Swing rod; 29. Return spring; 30. Second motor; 31. Shoveling plate; 32. Opening; 33. Scrap recovery tank; 34. Universal pulley; 35. Bracket; 36. Rope roller; 37. Steel rope; 38. Diagonal brace; 39. Guide wheel; 40. Third motor; 41. Driving wheel; 42. Driven wheel; 43. Synchronous belt; 44. Scraping plate. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the specification drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment:

[0019] Please refer to the attached Figure 1 - attached Figure 5 , the embodiment of the present invention provides a building exterior wall repair device for construction projects, such as Figure 1As shown in the figure, it includes a box body 1. The box body 1 is made of high-strength stainless steel, with good corrosion resistance and structural strength. A first notch 2 is opened in the middle of the front end of the box body 1. The first notch 2 is rectangular, and its size is slightly smaller than the area of the front end of the box body 1, providing an installation space for the drive wheel 3 and the drive belt 4. Drive wheels 3 are movably installed at the four corners inside the first notch 2. The drive wheels 3 are made of hard rubber with a non-slip surface treatment and are connected to the inner wall of the first notch 2 through bearings to ensure flexible rotation. The outer diameters of the drive wheels 3 are connected by a drive belt 4. The drive belt 4 is made of high-strength polyurethane, with the characteristics of wear resistance and anti-tensile, and can stably transmit power. An activity block 6 is fixedly installed at the outer side end of the drive belt 4. The activity block 6 is tightly fixed to the drive belt 4 by bolts and can move left and right under the drive of the drive belt 4. A transfer pump 7 is fixedly installed at the top of the box body 1. The transfer pump 7 is a high-pressure piston pump, with the model XX-100, which can provide stable and strong mud transfer pressure. A corrugated pipe 8 is fixedly installed at the output end of the transfer pump 7. The corrugated pipe 8 is made of bendable rubber, with good flexibility, and is convenient to move along with the activity block 6. The end of the corrugated pipe 8 is fixedly installed on the front side of the activity block 6 and a mud spray head 9 is fixedly installed. The mud spray head 9 is a fan-shaped spray head, which can evenly spray the mud on the outer wall surface. A second notch 13 is opened at the lower side of the front end of the box body 1. The size of the second notch 13 is adapted to the activity table 15, used to accommodate the activity table 15 and provide a moving space for it. The activity table 15 is movably installed inside the second notch 13. The activity table 15 is made of aluminum alloy, with light weight and high strength.

[0020] In this embodiment, a mud storage tank 10 is opened inside the box body 1. The volume of the mud storage tank 10 is 200L, which can meet the needs of a relatively long-time repair operation at one time. An inlet 11 is opened at the top of the mud storage tank 10 and the inlet 11 is connected to the outside. A sealing cover is provided at the inlet 11 to prevent the mud from spilling during transportation and operation. A feed pipe 12 is fixedly installed at the input end of the transfer pump 7 and the end of the feed pipe 12 extends into the inside of the mud storage tank 10. The feed pipe 12 is made of wear-resistant plastic to ensure the stability of the mud transfer process. A first motor 5 is fixedly installed on one side inside the first notch 2 and the drive end of the first motor 5 is fixedly installed in the middle of the drive wheel 3 on one starting side. The first motor 5 is a three-phase asynchronous motor with a power of 1.5kW, which can provide sufficient power for the drive wheel 3. A scraping plate 44 is fixedly installed at the lower position near the first notch 2 at the front end of the box body 1. The scraping plate 44 is made of stainless steel, and its length is the same as the width of the first notch 2, which can scrape the mud sprayed on the outer wall flat when the box body 1 moves.

[0021] Further, a lead screw 14 is movably installed on the inner side of the second notch 13, and the middle part of the lead screw 14 is threadedly connected to the inner side of the movable table 15, which can accurately control the moving distance of the movable table 15. A guide rod 16 is movably installed on the other inner side of the second notch 13, and the middle part of the guide rod 16 is movably installed on the other inner side of the movable table 15. The guide rod 16 plays a limiting role to ensure that the movable table 15 will not deviate during the moving process. A second motor 30 is fixedly installed on one side of the box body 1, and the driving end of the second motor 30 is fixedly installed at one end of the lead screw 14. The second motor 30 is a servo motor, which can achieve precise speed and steering control.

[0022] Further, a fixing frame 23 is fixedly installed at the rear end of the movable table 15. The fixing frame 23 is welded by steel, which has high structural strength. A DC motor 24 is fixedly installed in the middle of the rear end of the fixing frame 23. The power of the DC motor 24 is 2 kW, which can provide power for the subsequent impact structure. The driving end of the DC motor 24 extends into the fixing frame 23 and is fixedly installed with a main shaft 25. The main shaft 25 is made of high-strength alloy steel to ensure that it will not deform under high-speed rotation. A rotating body 26 is fixedly installed on the outer diameter of the main shaft 25. An inclined ball groove is provided on the outer diameter of the rotating body 26, and an inclined bearing seat 27 is movably installed outside the ball groove. The inclination angle of the ball groove is precisely calculated to ensure that the inclined bearing seat 27 can achieve effective swinging. Swing rods 28 are fixedly installed at both ends of the inclined bearing seat 27, and the ends of the swing rods 28 are movably installed at the rear ends of the corresponding side cylinders 20. The swing rods 28 are connected to the cylinders 20 and the inclined bearing seats 27 through pins to achieve flexible transmission.

[0023] Further, the outer diameters of the sliding rods 18 on the side close to the cylinder 20 are all connected to the inner wall of the sleeve 17 through return springs 29. The return springs 29 are made of high-strength spring steel and have good elasticity and return performance. Shovel plates 31 are fixedly installed on both sides of the bottom of the movable table 15. The front ends of the shovel plates 31 are wedge-shaped, which is convenient for shoveling waste materials and feeding them into the opening 32.

[0024] Specifically, a DC motor 24 drives the main shaft 25 to rotate, driving the rotating body 26 to rotate. Since there is a certain angle between the ball groove on the outer wall of the rotating body 26 and the central axis, when the rotating body 26 rotates, the two ends of the inclined bearing block 27 will swing back and forth, and through the action of the swing rod 28, drive the two cylinders 20 to reciprocate back and forth in the sleeve 17. When the cylinder 20 moves forward, the air between the cylinder 20 and the piston 21 is compressed, pushing the hammer 22 forward. When the cylinder 20 moves to the forefront, the hammer 22 continues to move forward due to inertia, thus hitting the tail of the slide rod 18, and then the slide rod 18 drives the hammer head 19 to move, realizing one impact output. When the cylinder 20 moves backward, at this time the volume between the cylinder 20 and the piston 21 increases, the air pressure decreases, and under the action of the external atmospheric pressure, the hammer 22 moves backward, and at the same time the return spring 29 resets the slide rod 18. After that, the cylinder 20 moves forward again, and the hammer 22 will impact forward more violently, causing the hammer head 19 at the end of the slide rod 18 to impact the wall surface. This process is repeated continuously, and the two hammer heads 19 can continuously hammer the wall surface. By continuously knocking the damaged outer wall with the hammer head 19, the undropped damaged wall skin is shaken off and received through the waste recycling slot 33.

[0025] Furthermore, a waste recycling slot 33 is fixedly installed at the bottom end of the box body 1. The volume of the waste recycling slot 33 is 50L, which can accommodate a certain amount of waste. Openings 32 are provided on both inner sides of the second slot opening 13, and the bottoms of the openings 32 are all connected to the inside of the waste recycling slot 33. The size design of the openings 32 ensures that the waste can smoothly fall into the waste recycling slot 33. Universal wheels 34 are fixedly installed at the four corners of the front end of the box body 1. The universal wheels 34 are equipped with braking devices and can fix the position of the box body 1 when needed.

[0026] Furthermore, it also includes a bracket 35. The bracket 35 is made of high-strength steel, and its structure has been mechanically calculated to be able to withstand various loads during the operation of the box body 1. A rope roller 36 is movably installed on the upper side inside the bracket 35. Steel ropes 37 are wound around the outer diameters on both sides of the rope roller 36. The steel ropes 37 are made of high-strength galvanized steel wires with a diameter of 8mm to ensure sufficient load-bearing capacity. Two inclined support frames 38 are fixedly installed on the side of the bracket 35 close to the box body 1. Guide wheels 39 are movably installed at the tops of the inclined support frames 38. The surfaces of the guide wheels 39 are smooth-treated to reduce the wear of the steel ropes 37 during movement. The ends of the steel ropes 37 bypass the outer diameters of the corresponding guide wheels 39 and are fixedly installed at the top end of the box body 1. The steel ropes 37 are firmly fixed on the box body 1 through bolts and pressing plates.

[0027] Further, a third motor 40 is fixedly installed on the lower side inside the bracket 35. The third motor 40 is a variable-frequency motor and can adjust the speed according to actual operation requirements. The driving end of the third motor 40 extends to the outside of the bracket 35 and is fixedly installed with a driving wheel 41. One end of the rope roller 36 extends to the outside of the bracket 35 through a connecting shaft and is fixedly installed with a driven wheel 42. The outer diameters of the driving wheel 41 and the driven wheel 42 are connected by a synchronous belt 43. The synchronous belt 43 is made of rubber and has a toothed structure, which can achieve precise transmission and avoid slipping.

[0028] Working principle: First, fix the support 35 to a firm part of the building roof through expansion bolts to ensure its stability. Pour the concrete slurry for repair into the slurry storage tank 10 through the feeding port 11. The slurry in the slurry storage tank 10 can be stirred by the stirring device to prevent precipitation. Then lower the box body 1 so that it can move up and down along the building exterior wall by using the universal pulley 34. Drive the driving wheel 41 to rotate by the third motor 40. With the transmission of the synchronous belt 43, drive the driven wheel 42 and the rope roller 36 to rotate accordingly. When the rope roller 36 rotates, it will release the steel rope 37. Under the guiding action of the guide wheel 39, the box body 1 moves smoothly down along the building exterior wall until it reaches the damaged exterior wall. At this time, start the DC motor 24. Drive the main shaft 25 to rotate by the DC motor 24, and drive the rotating body 26 to rotate. Since there is a certain angle between the ball groove on the outer wall of the rotating body 26 and the central axis, when the rotating body 26 rotates, it will cause the two ends of the inclined bearing seat 27 to swing back and forth, and through the action of the swing rod 28, drive the two cylinder bodies 20 to move back and forth in the sleeve 17. When the cylinder body 20 moves forward, the air between the cylinder body 20 and the piston 21 is compressed, pushing the hammer 22 to move forward. When the cylinder body 20 moves to the frontmost position, the hammer 22 continues to move forward due to inertia, thus hitting the tail of the slide rod 18, and then driving the hammer head 19 to move by the slide rod 18, realizing one impact output. When the cylinder body 20 moves backward, at this time, the volume between the cylinder body 20 and the piston 21 increases, the air pressure decreases, and under the action of the external atmospheric pressure, the hammer 22 moves backward, and at the same time, the return spring 29 returns the slide rod 18 to its original position. Then the cylinder body 20 moves forward again, and the hammer 22 will impact forward more violently, causing the hammer head 19 at the end of the slide rod 18 to impact the wall surface. This process is repeated continuously, and the two hammer heads 19 can continuously hammer the wall surface. By continuously knocking the damaged exterior wall with the hammer heads 19, the unpeeled damaged wall skin is shaken off and received through the waste recycling trough 33. Drive the lead screw 14 to rotate by the second motor 30. With the limiting action of the guide rod 16, drive the movable table 15 to move left and right. Control the winding and unwinding of the steel rope 37 by the third motor 40 to control the up and down movement of the box body 1, realizing the comprehensive cleaning of the damaged exterior wall and facilitating the subsequent repair work. The left and right movement of the movable table 15 will also send the waste materials falling into the second notch 13 into the opening 32 through the shovel plate 31, and they will also fall into the waste recycling trough 33. After completing the cleaning work of the exterior wall, start the delivery pump 7. The delivery pump 7 pumps out the concrete slurry in the slurry storage tank 10 and sprays it out through the corrugated pipe 8 and the slurry spray head 9, spraying it on the surface of the exterior wall to be repaired. By starting the second motor 30 to drive one of the transmission wheels 3 to rotate, with the transmission of the transmission belt 4, drive all the transmission wheels 3 to rotate, thereby driving the movable block 6 and the slurry spray head 9 to move left and right. Control the winding and unwinding of the steel rope 37 by the third motor 40 to control the up and down movement of the box body 1, realizing the slurry spraying work on the damaged exterior wall. When the box body 1 moves, it will drive the scraping plate 44 to move, and scrape the slurry sprayed on the exterior wall flat.The repair work of the entire exterior wall is realized, and the whole process does not require personnel to climb on the exterior wall of the building for work, with higher safety.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A house exterior wall repair device for construction engineering, including a box body (1), characterized in that, A first notch (2) is provided in the middle of the front end of the box body (1). Transmission wheels (3) are movably installed at the four corners inside the first notch (2). The outer diameters of the transmission wheels (3) are connected by a transmission belt (4). An activity block (6) is fixedly installed at the outer side end of the transmission belt (4). A delivery pump (7) is fixedly installed at the top end of the box body (1). The output end of the delivery pump (7) is fixedly installed with a corrugated pipe (8). The end of the corrugated pipe (8) is fixedly installed at the front side of the activity block (6) and is fixedly installed with a mud spray head (9). A second notch (13) is provided at the lower side of the front end of the box body (1). An activity table (15) is movably installed inside the second notch (13). Sleeves (17) are fixedly installed at the upper and lower sides inside the activity table (15). Slide rods (18) are movably installed at one side inside each of the sleeves (17). The ends of the slide rods (18) extend to the outside of the sleeves (17) and are fixedly installed with hammer heads (19). Cylinders (20) are movably installed at the other side inside each of the sleeves (17). Pistons (21) are movably installed inside the cylinders (20). Hammer strikers (22) are fixedly installed at the ends of the pistons (21) close to the slide rods (18).

2. The exterior wall repair device for a building project according to claim 1, wherein, A mud storage tank (10) is provided inside the box body (1). A feeding port (11) is provided at the top end of the mud storage tank (10) and the feeding port (11) is communicated with the outside. A feeding pipe (12) is fixedly installed at the input end of the delivery pump (7) and the end of the feeding pipe (12) extends into the mud storage tank (10). A first motor (5) is fixedly installed at one side inside the first notch (2) and the driving end of the first motor (5) is fixedly installed at the middle of the transmission wheel (3) on the starting side. A scraping plate (44) is fixedly installed at the front end of the box body (1) at a position below the first notch (2).

3. The exterior wall repair device for a building project according to claim 1, characterized in that, A lead screw (14) is movably installed at one side inside the second notch (13) and the middle of the lead screw (14) is threadedly connected to one side inside the activity table (15). A guide rod (16) is movably installed at the other side inside the second notch (13) and the middle of the guide rod (16) is movably installed at the other side inside the activity table (15). A second motor (30) is fixedly installed at one side of the box body (1) and the driving end of the second motor (30) is fixedly installed at one end of the lead screw (14).

4. A building exterior wall repair device for construction projects, characterized in that, A fixing frame (23) is fixedly installed at the rear end of the activity table (15). A DC motor (24) is fixedly installed at the middle of the rear end of the fixing frame (23). The driving end of the DC motor (24) extends into the fixing frame (23) and is fixedly installed with a main shaft (25). A rotating body (26) is fixedly installed on the outer diameter of the main shaft (25). An inclined ball groove is provided on the outer diameter of the rotating body (26) and an inclined bearing seat (27) is movably installed outside the ball groove. Swing rods (28) are fixedly installed at both ends of the inclined bearing seat (27) and the ends of the swing rods (28) are movably installed at the rear ends of the corresponding cylinders (20).

5. The exterior wall repair device for buildings in construction engineering according to claim 1, characterized in that, On the outer diameter of one side of the sliding rod (18) close to the cylinder block (20), it is connected to the inner wall of the sleeve (17) through a return spring (29). On both sides of the bottom of the movable table (15), shovel plates (31) are fixedly installed.

6. The exterior wall repair device for a building project according to claim 1, characterized in that, At the bottom end of the box body (1), a waste recycling groove (33) is fixedly installed. On both sides of the inside of the second notch (13), openings (32) are formed, and the bottoms of the openings (32) are both communicated with the inside of the waste recycling groove (33). At the four corners of the front end of the box body (1), universal wheels (34) are fixedly installed.

7. The exterior wall repair device for a building project according to claim 1, wherein, It further includes a bracket (35). On the upper side inside the bracket (35), a rope roller (36) is movably installed. Steel ropes (37) are wound around the outer diameters on both sides of the rope roller (36). On one side of the bracket (35) close to the box body (1), two diagonal support frames (38) are fixedly installed. Guide wheels (39) are movably installed at the tops of the diagonal support frames (38). The ends of the steel ropes (37) bypass the outer diameters of the corresponding guide wheels (39) and are fixedly installed at the top end of the box body (1).

8. The exterior wall repair device for a building project according to claim 7, characterized in that, At the lower side inside the bracket (35), a third motor (40) is fixedly installed. The driving end of the third motor (40) extends to the outside of the bracket (35) and is fixedly installed with a driving wheel (41). One end of the rope roller (36) extends to the outside of the bracket (35) through a connecting shaft and is fixedly installed with a driven wheel (42). The outer diameters of the driving wheel (41) and the driven wheel (42) are connected by a synchronous belt (43).

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