Crack repair equipment for building construction

Abstract

This application belongs to the field of building construction technology and discloses a crack repair device for building construction. The application includes an inverted U-shaped frame, two fixed plates fixed to the bottom of the U-shaped frame, and casters at the bottom of the two fixed plates. A material cylinder is fixed between the two sides of the U-shaped frame via a connecting rod. A material nozzle is provided at the bottom of the material cylinder. A compression piston is installed inside the material cylinder, pressing against the inner wall of the cylinder. A feed pipe is fixed and connected to the side wall of the material cylinder. An opening is provided at the intersection between the side of the outer wall of the material cylinder away from the feed pipe and the upper end of the material cylinder. A sealing shell for closing the opening is hinged to the side wall of the material cylinder. The sealing shell and the material cylinder cooperate to form a complete cylindrical structure. The bottom of the sealing shell is located near the feed pipe. Arc-shaped grooves are provided at corresponding positions on the outer wall of the sealing shell and the outer wall of the material cylinder. A clamp is installed in the arc-shaped groove. A drive mechanism is provided on the U-shaped frame. This application achieves the cleaning effect by disassembling the material cylinder through the clamp.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a crack repair device for building construction. Background Technology

[0002] During the construction of buildings, cracks may sometimes appear on the walls of a house due to vibration or settlement. These cracks not only affect the aesthetics of the building, but also allow wind, sand and rainwater to seep into the interior of the wall, causing corrosion of the steel bars inside the wall and thus affecting the service life of the building.

[0003] Chinese utility model patent CN219604941U discloses a crack repair device for building construction, comprising: a material cylinder with a slurry nozzle connected to its bottom, and support plates erected parallel to each other on both sides of the material cylinder; and a material injection mechanism having: a pressing component and a movable component. The pressing component is disposed at the top of the material cylinder and extends partially into the material cylinder. The movable component is symmetrically fixed to both sides of the pressing component and slides in cooperation with the support plates on both sides. The pressing component includes a compression piston.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: In the aforementioned equipment, the operator uses the pressing component to spray slurry from the slurry nozzle of the material cylinder into the crack for filling. However, during the pushing process of the pressing component, some slurry will adhere to the inner wall of the material cylinder. Since the material cylinder in this equipment is fully enclosed, it is not convenient for the operator to clean the slurry on the inner wall of the material cylinder, thereby increasing the probability of the pressing component being obstructed from sliding. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a crack repair device for building construction.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a crack repair device for building construction, comprising an inverted U-shaped frame, two fixed plates fixed to the bottom of the U-shaped frame, and casters disposed at the bottom of the two fixed plates for driving the U-shaped frame to move. A material cylinder is fixed between the frame bodies on both sides of the U-shaped frame by a connecting rod. A material nozzle is provided at the bottom of the material cylinder. A compression piston is provided inside the material cylinder and abuts against the inner wall of the material cylinder. A feed pipe is fixed and connected to the side wall of the material cylinder. An opening is provided at the intersection between the side of the outer wall of the cylinder away from the feed pipe and the upper end of the cylinder. A sealing shell for closing the opening is hinged to the side wall of the cylinder. The sealing shell and the cylinder cooperate to form a complete cylindrical structure. The bottom of the sealing shell is located near the feed pipe. Arc-shaped grooves are provided at corresponding positions on the outer wall of the sealing shell and the outer wall of the cylinder. A clamp for fixing the sealing shell and the cylinder is provided in the arc-shaped groove. A drive mechanism for pushing the extrusion piston and causing the slurry to be ejected from the nozzle is provided on the U-shaped frame.

[0007] By adopting the above technical solution, when workers need to repair cracks in the top of a building floor slab, they need to move the repair equipment to the required repair location. Then, a dedicated grout spray nozzle is connected to the nozzle (ensuring the tip of the nozzle extends into the crack). At this point, workers can feed grout into the cylinder through the feed pipe, and then use the drive mechanism to propel the grout from the nozzle and the dedicated grout spray nozzle sequentially, thus repairing the crack. After use, some grout inevitably adheres to the inner wall of the cylinder. To prevent the grout from solidifying and affecting future use, workers simply need to remove the clamps and open the sealing shell to clean the grout adhering to the inner wall of the cylinder. This reduces the probability of the drive mechanism being obstructed during the next push of the extrusion piston due to grout solidification. This application changes the integrated structure of the cylinder in traditional technology, overcoming the defect of difficulty in cleaning the grout adhering to the inner wall of the cylinder.

[0008] Furthermore, both ends of the clamp are integrally formed with U-shaped fixing blocks, and a screw is rotatably installed on the inner wall of one of the U-shaped fixing blocks. The outer diameter of the screw is smaller than the distance between the inner walls on both sides of the U-shaped fixing block, and a nut is threadedly connected to the screw.

[0009] By adopting the above technical solution, workers can complete the clamp fixing operation by tightening the nut, ensuring the clamp's effective fixation of the sealing shell and the material cylinder. When it is necessary to open the sealing shell and clean the inner wall of the material cylinder, workers only need to unscrew the nut and remove the clamp.

[0010] Furthermore, a limiting block with a diameter larger than the outer diameter of the screw is fixed to the free end of the screw.

[0011] By adopting the above technical solution, the setting of the limiting block plays a good limiting role for the nut. After loosening the nut and bringing it close to the limiting block, the operator can easily rotate the screw rod, allowing it to slide between the two U-shaped fixing blocks. This makes it easy to remove the clamp, eliminating the tedious operation of completely unscrewing the nut and reinstalling it on the screw rod for the next fixing.

[0012] Furthermore, an annular rubber sheet is attached and fixed to the side wall of the opening. When the sealing shell is closed and fixed by the clamp, the sealing shell cooperates with the side wall of the opening and abuts against the annular rubber sheet.

[0013] By adopting the above technical solution, the annular rubber sheet is made of rubber material, which has a certain degree of softness and compressibility. When the workers tighten the nut, the clamp cooperates with the sealing shell and the material cylinder and presses against the annular rubber sheet, ensuring the sealing of the connection between the sealing shell and the material cylinder, thereby preventing the slurry from overflowing from the gap and facilitating the smooth progress of crack repair work.

[0014] Furthermore, the driving mechanism includes a connecting assembly, which includes a horizontal plate disposed between the frame bodies on both sides of the U-shaped frame and located above the material cylinder, a connecting column fixed to the bottom of the horizontal plate, and a sleeve fixed to the frame body on the top of the U-shaped frame. The lower end of the connecting column passes through the material cylinder and the sealing shell with clearance fit, and the lower end of the connecting column is fixedly connected to the top of the extrusion piston. The driving mechanism also includes a transmission assembly for driving the horizontal plate to rise and fall.

[0015] By adopting the above technical solution, when the staff controls the horizontal plate to rise and fall through the transmission component, the horizontal plate pushes the connecting column to move, and the connecting column pushes the extrusion piston to move, thereby causing the slurry to be sprayed from the nozzle and slurry spraying joint to the location of the crack that needs to be repaired, thus completing the crack repair work.

[0016] Furthermore, the transmission assembly includes a movable rod disposed within the sleeve and slidably connected thereto. The movable rod has multiple toothed grooves evenly distributed. The transmission assembly also includes a rotating rod rotatably mounted between the two sides of the U-shaped frame, a gear fixed to the rotating rod and meshing with the upper toothed groove of the movable rod, and a drive motor fixed to the side wall of the U-shaped frame and driving the rotating rod to rotate. The outer diameter of the movable rod is smaller than the inner diameter of the sleeve. An upper ring is fixed to the top of the movable rod, and the outer wall of the upper ring abuts against the inner wall of the sleeve. A lower ring is fixed to the inner wall of the sleeve near the top of the rotating rod. The outer wall of the sleeve has a clearance notch for the gear to pass through. The end of the rotating rod near the drive motor passes through one side of the U-shaped frame and is fixed to the output end of the drive motor.

[0017] By adopting the above technical solution, when the worker needs to spray the slurry in the cylinder into the crack to be repaired, the worker only needs to start the drive motor, which will drive the rotating rod to rotate. The rotating rod will drive the gear fixed to it to rotate. The gear will drive the movable rod to slide through the meshing tooth groove. This will cause the movable rod to drive the horizontal plate fixed to its lower end, the connecting column fixed to the bottom of the horizontal plate, and the extrusion piston fixed to the lower end of the connecting column to move. This will cause the slurry in the cylinder to be sprayed from the nozzle to the location of the crack to be repaired.

[0018] Furthermore, an inclined block is fixedly attached to the top of the extrusion piston. The height of the inclined block on the side closer to the feed pipe is greater than the height on the side farther from the feed pipe, and the edge of the top of the inclined block abuts against the inner wall of the material cylinder.

[0019] By adopting the above technical solution, the inclined block moves synchronously with the extrusion piston. The edge of the top of the inclined block scrapes off the material attached to the inner wall of the barrel, and the scraped waste moves along the inclined surface of the top of the inclined block to the opening side, so that the staff can clean up the waste after opening the sealing shell.

[0020] Furthermore, the end of the feed pipe away from the material cylinder is fixed and connected to a funnel pipe, and the opening diameter of the funnel pipe on the side away from the material cylinder is larger than the opening diameter of the funnel pipe on the side closer to the material cylinder.

[0021] By adopting the above technical solution, the funnel tube provides a larger feeding space for workers to add slurry, effectively reducing the probability of material spillage and overflow due to the small diameter of the feeding pipe.

[0022] In summary, this utility model has the following beneficial effects: When workers need to repair cracks in the top of a building floor slab, the repair equipment needs to be moved to the required repair location. Then, a dedicated grout spray nozzle is connected to the nozzle (ensuring the tip of the nozzle extends into the crack). Workers can then feed grout into the cylinder through the feed pipe. The drive mechanism then propels the grout from the cylinder through the nozzle and the dedicated grout spray nozzle, thus repairing the crack. After use, some grout inevitably adheres to the inner wall of the cylinder. To prevent the grout from solidifying and affecting future use, workers simply remove the clamps and open the sealing shell to clean the grout adhering to the inner wall of the cylinder. This reduces the probability of the drive mechanism being obstructed during the next push of the extrusion piston due to grout solidification. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2This is a schematic diagram of the structure from another perspective of an embodiment of the present utility model;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 The present utility model embodiment is used to highlight the structural diagram of the clamp;

[0027] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 This is a schematic diagram illustrating the structure of the annular rubber sheet in an embodiment of this utility model;

[0029] Figure 7 yes Figure 6 Enlarged diagram of point C in the middle.

[0030] In the diagram: 1. U-shaped frame; 11. Fixing plate; 12. Caster wheel; 13. Connecting rod; 2. Material cylinder; 21. Material nozzle; 211. Solenoid valve; 22. Extrusion piston; 23. Feed pipe; 24. Opening; 25. Funnel pipe; 3. Sealing shell; 31. Arc-shaped groove; 32. Clamp; 33. U-shaped fixing block; 34. Screw; 35. Nut; 36. Limiting block; 37. Annular rubber sheet; 4. Drive mechanism; 41. Connecting assembly; 411. Horizontal plate; 412. Connecting column; 413. Sleeve; 42. Transmission assembly; 421. Movable rod; 422. Rotating rod; 423. Gear; 424. Drive motor; 5. Gear groove; 6. Upper ring; 7. Lower ring; 8. Clearance notch; 9. Inclined block. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] like Figure 1-7As shown in the figure, this application discloses a crack repair device for building construction, including a U-shaped frame 1, a fixing plate 11, a material cylinder 2, a material nozzle 21 (the material nozzle 21 is equipped with a solenoid valve 211 for controlling the material feeding), a compression piston 22, a sealing shell 3, and a drive mechanism 4. The U-shaped frame 1 is U-shaped. The fixing plate 11 is fixed to the bottom of the U-shaped frame 1. There are two fixing plates 11, and each fixing plate 11 is equipped with a universal wheel 12 with a brake at its bottom. The material cylinder 2 is located between the frame bodies on both sides of the U-shaped frame 1. Specifically, both sides of the material cylinder 2 are fixed to the frame bodies on both sides of the U-shaped frame 1 by connecting rods 13. The material nozzle 21 is located at the bottom of the material cylinder 2 (the material nozzle 21 is threaded and connected to a grout spraying joint specifically for crack repair through the thread; the grout spraying joint is not shown in the figure. The discharge end of the grout spraying joint is provided with a bevel so that the discharge end of the grout spraying joint can extend into the crack to be repaired). The extrusion piston 22 is disposed inside the cylinder, and the side wall of the extrusion piston 22 abuts against the inner wall of the cylinder 2.

[0033] A feed pipe 23 is fixed and connected to the side wall of the feed cylinder 2. A funnel pipe 25 is fixed and connected to the end of the feed pipe 23 away from the feed cylinder 2, and the opening diameter of the funnel pipe 25 on the side away from the feed cylinder 2 is larger than the opening diameter of the funnel pipe 25 on the side closer to the feed cylinder 2. The funnel pipe 25 provides a larger feeding space for the staff to add slurry, effectively reducing the probability of material spillage and overflow due to the small diameter of the feed pipe 23.

[0034] In this embodiment, an opening 24 is provided at the intersection between the outer wall of the material cylinder 2 and the upper end of the material cylinder 2, and the opening 24 is on the side away from the feed pipe 23. The sealing shell 3 is hinged to the side wall of the material cylinder 2 and is used to close the opening 24. The sealing shell 3 and the material cylinder 2 cooperate to form a complete cylindrical structure, and the bottom of the sealing shell 3 is located near the feed pipe 23.

[0035] Arc-shaped grooves 31 are provided on the outer walls of the sealing shell 3 and the outer walls of the material cylinder 2 at corresponding positions. The axis of the arc-shaped grooves 31 coincides with the axis of the material cylinder 2, and clamps 32 for fixing the sealing shell 3 and the material cylinder 2 are provided inside the arc-shaped grooves 31. In this embodiment, U-shaped fixing blocks 33 are integrally formed at both ends of the clamps 32, and the U-shaped fixing blocks 33 are U-shaped. A screw 34 is rotatably installed on the inner wall of the U-shaped fixing block 33, and the outer diameter of the screw 34 is smaller than the distance between the inner walls on both sides of the U-shaped fixing block 33. A nut 35 is fitted on the screw 34 and threadedly connected to the screw 34. After the operator tightens the nut 35, the clamp 32 is fixed, ensuring the clamp 32's fixing effect on the sealing shell 3 and the material cylinder 2. When it is necessary to open the sealing shell 3 and clean the inner wall of the material cylinder 2, the operator only needs to unscrew the nut 35 and remove the clamp 32.

[0036] The drive mechanism 4 is mounted on the U-shaped frame 1 and is used to push the extrusion piston 22 to eject the slurry from the nozzle 21. The drive mechanism 4 includes a connecting assembly 41 and a transmission assembly 42. The connecting assembly 41 includes a horizontal plate 411, a connecting column 412, and a sleeve 413. The horizontal plate 411 is located between the two sides of the frame of the U-shaped frame 1 and above the material cylinder 2. The connecting column 412 is fixed to the bottom of the horizontal plate 411. The lower end of the connecting column 412 passes through the top of the material cylinder 2 and the top of the sealing shell 3 with clearance fit, and the lower end of the connecting column 412 is fixedly connected to the top of the extrusion piston 22. The sleeve 413 is a cylindrical structure, and its upper end is fixed to the frame at the top of the U-shaped frame 1.

[0037] The transmission assembly 42 is used to drive the horizontal plate 411 to rise and fall. The transmission assembly 42 includes a movable rod 421, a rotating rod 422, a gear 423, and a drive motor 424. The movable rod 421 is disposed inside the sleeve 413 and slidably connected. The outer diameter of the movable rod 421 is smaller than the inner diameter of the sleeve 413. An upper ring 6 is fixed to the top of the movable rod 421, and the outer wall of the upper ring 6 abuts against the inner wall of the sleeve 413. A lower ring 7 is fixed to the inner wall of the sleeve 413, and the lower ring 7 is located near the top of the rotating rod 422. The movable rod 421 is provided with multiple evenly distributed toothed grooves 5. The rotating rod 422 is rotatably mounted between the two sides of the U-shaped frame 1. The gear 423 is fixedly sleeved on the rotating rod 422. The outer wall of the sleeve 413 is provided with a clearance notch 8 for the gear 423 to pass through, and the gear 423 meshes with the upper toothed groove 5 of the movable rod 421. The drive motor 424 is fixed to the side wall of the U-shaped frame 1, and the end of the rotating rod 422 near the drive motor 424 passes through one side of the U-shaped frame 1 and is fixed to the output end of the drive motor 424.

[0038] When workers need to repair cracks in the top of a building floor slab, they need to move the repair equipment to the location to be repaired. Then, they connect a special grout spray nozzle to the nozzle 21 (ensuring that the tip of the grout spray nozzle extends into the crack). At this time, workers can deliver grout into the cylinder 2 through the funnel pipe 25. Workers only need to start the drive motor 424, which drives the rotating rod 422 to rotate. The rotating rod 422 drives the gear 423 fixed to it to rotate. The gear 423 drives the movable rod 421 to slide through the tooth groove 5 it meshes with. This causes the movable rod 421 to drive the horizontal plate 411 fixed to its lower end, the connecting column 412 fixed to the bottom of the horizontal plate 411, and the extrusion piston 22 fixed to the lower end of the connecting column 412 to move downward. This causes the grout in the cylinder 2 to be sprayed from the nozzle and the grout spray nozzle into the crack to be repaired, thus repairing the crack. After the repair equipment is used, some slurry inevitably adheres to the inner wall of the cylinder 2. To prevent the slurry from solidifying and affecting the next use, the operator only needs to remove the clamp 32 and then open the sealing shell 3 to clean the slurry adhering to the inner wall of the cylinder 2. This reduces the probability that the drive mechanism 4 will be obstructed during the next push of the extrusion piston 22 due to slurry solidification. This application changes the one-piece structure of the cylinder 2 in the conventional technology, overcoming the defect of difficulty in cleaning the slurry adhering to the inner wall of the cylinder 2.

[0039] In this embodiment, a limiting block 36 is fixed to the free end of the screw 34, and the diameter of the limiting block 36 is larger than the outer diameter of the screw 34. The limiting block 36 provides a good limiting effect for the nut 35. After loosening the nut 35 and bringing it close to the limiting block 36, the operator can easily rotate the screw 34, allowing it to slide between the two U-shaped fixing blocks 33. This makes it easy to remove the clamp 32, eliminating the tedious operation of completely unscrewing the nut 35 and then reinstalling it on the screw 34 for the next fixing.

[0040] In this embodiment, an annular rubber sheet 37 is attached to the sidewall of the opening 24. When the sealing shell 3 is closed and fixed by the clamp 32, the sealing shell 3 engages with the sidewall of the opening 24 and presses against the annular rubber sheet 37. The annular rubber sheet 37 is made of rubber material and has a certain degree of softness and compressibility. When the worker tightens the nut 35, the clamp 32 engages with the sealing shell 3 and the material cylinder 2 and presses against the annular rubber sheet 37, ensuring the sealing of the connection between the sealing shell 3 and the material cylinder 2, thereby preventing the slurry from overflowing from the gap and facilitating the smooth progress of the crack repair work.

[0041] In this embodiment, an inclined block 9 is fixedly attached to the top of the extrusion piston 22. The height of the inclined block 9 on the side closer to the feed pipe 23 is greater than the height on the side farther from the feed pipe 23, and its edge abuts against the inner wall of the material cylinder 2. The inclined block 9 moves synchronously with the extrusion piston 22. The edge of the top of the inclined block 9 scrapes off the material adhering to the inner wall of the material cylinder 2, and causes the scraped waste to move along the inclined surface of the top of the inclined block 9 to the opening 24 side, so that the operator can clean up the waste after opening the sealing shell 3.

[0042] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A crack repair device for building construction, comprising an inverted U-shaped frame (1), two fixing plates (11) fixed to the bottom of the U-shaped frame (1), and casters (12) disposed at the bottom of the two fixing plates (11) for driving the U-shaped frame (1) to move, characterized in that: A material cylinder (2) is fixed between the two sides of the U-shaped frame (1) by a connecting rod (13). A material nozzle (21) is provided at the bottom of the material cylinder (2). A compression piston (22) is provided inside the material cylinder (2) and is pressed against the inner wall of the material cylinder (2). A feed pipe (23) is fixed and connected to the side wall of the material cylinder (2). An opening (24) is provided at the intersection between the side of the outer wall of the material cylinder (2) away from the feed pipe (23) and the upper end of the material cylinder (2). A seal for closing the opening (24) is hinged to the side wall of the material cylinder (2). The sealing shell (3) and the material cylinder (2) are used to form a complete cylindrical structure. The bottom of the sealing shell (3) is located near the feed pipe (23). The outer wall of the sealing shell (3) and the outer wall of the material cylinder (2) are provided with arc-shaped grooves (31). The arc-shaped grooves (31) are provided with clamps (32) for fixing the sealing shell (3) and the material cylinder (2). The U-shaped frame (1) is provided with a drive mechanism (4) for pushing the extrusion piston (22) and causing the slurry to be sprayed out from the nozzle (21).

2. The crack repairing apparatus for housing construction according to claim 1, characterized in that: Both ends of the clamp (32) are integrally formed with U-shaped fixing blocks (33), and a screw (34) is rotatably installed on the inner wall of one of the U-shaped fixing blocks (33). The outer diameter of the screw (34) is smaller than the distance between the inner walls on both sides of the U-shaped fixing block (33), and a nut (35) threadedly connected to the screw (34) is fitted on the screw (34).

3. The crack repairing apparatus for housing construction according to claim 2, characterized in that: The free end of the screw (34) is fixed with a limiting block (36) whose diameter is larger than the outer diameter of the screw (34).

4. The crack repairing apparatus for housing construction according to claim 1, characterized in that: An annular rubber sheet (37) is attached and fixed to the side wall of the opening (24). When the sealing shell (3) is closed and fixed by the clamp (32), the sealing shell (3) cooperates with the side wall of the opening (24) and abuts against the annular rubber sheet (37).

5. The crack repairing apparatus for housing construction according to claim 1, characterized in that: The drive mechanism (4) includes a connecting assembly (41), which includes a horizontal plate (411) disposed between the frame bodies on both sides of the U-shaped frame (1) and located above the material cylinder (2), a connecting column (412) fixed to the bottom of the horizontal plate (411), and a sleeve (413) fixed to the frame body on the top of the U-shaped frame (1). The lower end of the connecting column (412) passes through the material cylinder (2) and the sealing shell (3) with clearance fit, and the lower end of the connecting column (412) is fixedly connected to the top of the extrusion piston (22). The drive mechanism (4) also includes a transmission assembly (42) for driving the horizontal plate (411) to rise and fall.

6. The crack repairing apparatus for housing construction according to claim 5, characterized in that: The transmission assembly (42) includes a movable rod (421) disposed within the sleeve (413) and slidably connected. The movable rod (421) has toothed grooves (5), which are multiple and evenly distributed. The transmission assembly (42) also includes a rotating rod (422) rotatably mounted between the two sides of the U-shaped frame (1), a gear (423) fixed to the rotating rod (422) and meshing with the upper toothed grooves (5) of the movable rod (421), and a drive motor (424) fixed to the side wall of the U-shaped frame (1) and driving the rotating rod (422) to rotate. The outer diameter of the movable rod (421) is smaller than the inner diameter of the sleeve (413). An upper ring (6) is fixed at the top of the movable rod (421). The outer wall of the upper ring (6) abuts against the inner wall of the sleeve (413). A lower ring (7) is fixed at the position of the inner wall of the sleeve (413) near the top of the rotating rod (422). The outer wall of the sleeve (413) is provided with a clearance notch (8) for the gear (423) to pass through. The end of the rotating rod (422) near the drive motor (424) passes through one side of the U-shaped frame (1) and is fixed to the output end of the drive motor (424).

7. The crack repairing apparatus for housing construction according to claim 1, characterized in that: An inclined block (9) is fixedly attached to the top of the extrusion piston (22). The height of the inclined block (9) on the side closer to the feed pipe (23) is greater than the height on the side farther away from the feed pipe (23). The edge of the top of the inclined block (9) abuts against the inner wall of the material cylinder (2).

8. The crack repairing apparatus for housing construction according to claim 7, characterized in that: The feed pipe (23) is fixed at one end away from the material cylinder (2) and connected to a funnel pipe (25). The opening diameter of the funnel pipe (25) on the side away from the material cylinder (2) is greater than the opening diameter of the funnel pipe (25) on the side closer to the material cylinder (2).

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