A device and method for repairing cracks in inner and outer walls of a block

Abstract

The application relates to a building construction equipment field and discloses a device and a method for repairing cracks in inner and outer walls of blocks. The device comprises a suspension frame, a clamping type fixing mechanism, a clamping type driving mechanism and a grouting gun. The suspension frame is a support structure attached to a position of cracks on a block wall. The clamping type fixing mechanism is arranged on the suspension frame and used for clamping into the cracks on the block wall to fix the suspension frame at the position of the cracks on the block wall. The clamping type driving mechanism is arranged on the suspension frame and used for driving the clamping type fixing mechanism to clamp into the cracks on the block wall. The grouting gun is arranged on the suspension frame and used for injecting grout for repairing the cracks into the cracks on the block wall. The grouting gun at least comprises a grout inlet cavity, a grouting pipe and a flow guide probe. The grouting pipe is coaxially connected to one end of the grout inlet cavity and communicates with the grout inlet cavity. The flow guide probe extends into the grout inlet cavity and the cavity of the grouting pipe from the end of the grout inlet cavity opposite to the grouting pipe. The flow guide probe is movable in the grout inlet cavity and the grouting pipe and extends out of the end of the grouting pipe.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment technology, and in particular to a device and method for repairing cracks in the interior and exterior walls of masonry blocks. Background Technology

[0002] Cracks in masonry structures are a common quality problem in engineering. Minor cracks affect the appearance but not the function, while severe cracks can affect the load-bearing capacity and even cause building collapse. In many cases, the occurrence and development of building cracks are precursors to major accidents, requiring careful analysis and proper handling. Walls constructed with blocks and mortar can serve as load-bearing walls and enclosure walls in industrial and civil buildings. Repairing cracks in masonry structures should be designed based on their type, nature, and location, selecting appropriate repair materials, methods, and timing. Common crack repair methods include grouting, pressure grouting, and adding mesh. These methods can also be used in combination depending on the project requirements.

[0003] Cracks in typical masonry walls can extend to both the inner and outer surfaces, altering the wall structure and even affecting its overall strength and stress. For smaller cracks in masonry walls where the overall strength is not significantly affected, adding external mesh or reinforcing steel is too cumbersome and costly. Common repair methods include grouting or pressure grouting, where grout is directly injected to bond the cracks. Most of these methods involve manual grouting for shallow cracks, while deeper cracks are repaired using conventional equipment like spray guns or nozzles. However, because these tools cannot penetrate the cracks, relying solely on pressure grouting can easily result in incomplete filling of the crack's interior, creating cavities and affecting repair quality. Furthermore, holding spray guns and nozzles manually for extended periods is not only strenuous but also difficult to maintain stability, further contributing to substandard repair quality. To address these issues, a device and method for repairing cracks in masonry walls (both inner and outer surfaces) are designed. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for repairing cracks in the interior and exterior walls of masonry blocks in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides a device for repairing cracks in the interior and exterior walls of masonry blocks, comprising:

[0007] A suspension frame is a support structure attached to the crack in the masonry wall.

[0008] A snap-in fixing mechanism is provided on the suspension frame to fix the suspension frame to the location of the crack on the masonry wall by snapping it into the crack on the masonry wall surface.

[0009] A snap-in drive mechanism is provided on the suspension frame to drive the snap-in fixing mechanism to snap into the crack on the masonry wall surface;

[0010] The grouting gun is mounted on the suspension frame to inject grout into cracks in the masonry wall surface to repair cracks. The grouting gun includes at least a grout inlet chamber, a grouting pipe, and a flow guide probe. The grouting pipe is coaxially connected to one end of the grout inlet chamber and communicates with the grout inlet chamber. The flow guide probe extends into the grout inlet chamber from one end opposite to the grouting pipe and extends into the cavities of the grout inlet chamber and the grouting pipe. The flow guide probe moves telescopically within the grout inlet chamber and the grouting pipe and extends out from the end of the grouting pipe.

[0011] The grouting gun has a handle on one side of the grouting chamber. The handle has a grouting channel that communicates with the grouting chamber and connects to an external grouting hose. The grout is then pressurized and ejected from the grouting gun through the external grouting hose and external high-pressure jet grouting equipment.

[0012] Furthermore, the suspension frame includes:

[0013] The attached plate is a planar plate-like structure;

[0014] And a rectangular frame, which is vertically connected to the attached plate;

[0015] The snap-in drive mechanism is mounted on the rectangular frame.

[0016] Furthermore, the snap-fit ​​fixing mechanism consists of two sets symmetrically arranged at both ends of the attached plate. Each set of the snap-fit ​​fixing mechanism includes a claw. The middle part of the claw is rotatably connected to the end of the attached plate. The reverse end of the claw is inserted into the crack on the masonry wall surface and extends into the inner side of the rectangular frame. The side of the rectangular frame is provided with a clearance opening to avoid the claw from extending in.

[0017] Furthermore, one end of the claw that engages with the crack on the masonry wall surface has a pointed cone structure.

[0018] Furthermore, the locking drive mechanism includes:

[0019] A drive push plate is disposed inside the rectangular frame and located between the attached plate and the end of the claw that extends into the inner side of the rectangular frame. Both ends of the drive push plate abut against the end of the claw that extends into the inner side of the rectangular frame.

[0020] A guide plate, one end of which is vertically connected to the drive push plate, has a guide opening on the side of the rectangular frame opposite to the auxiliary plate, and the other end of the guide plate passes through the guide opening and slides within the guide opening. A limit plate is connected to the end of the guide plate opposite to the drive push plate.

[0021] A support block is connected to a side surface of the rectangular frame opposite to the attached plate, and the support block has an internal threaded hole.

[0022] And a threaded rod that is driven into the support block and threadedly connected to the support block, the threaded rod pressing against the guide plate.

[0023] Furthermore, the flow-guiding probe has a linear metal needle structure.

[0024] Furthermore, the upper end of the rectangular frame on the suspension frame is provided with a support frame for connecting and supporting the slurry inlet chamber.

[0025] Furthermore, a sealing ring is embedded in the grout inlet cavity. The sealing ring is located at the end of the grout inlet cavity opposite to the end where the grouting pipe is located. The sealing ring allows the flow guide probe to pass through and the sealing ring and the flow guide probe are relatively sealed. The sealing ring is a dynamic sealing ring.

[0026] Furthermore, the grouting gun injects non-shrink cement-based grout or epoxy-based grout into the cracks on the block wall surface to repair the cracks.

[0027] A repair method based on a block-based internal and external wall crack repair device includes the following steps:

[0028] Step 1: Before repairing the crack, first remove the plaster from the surface of the crack.

[0029] Step 2: Fix the suspension frame to the location of the crack on one side of the block wall using the snap-in fixing mechanism and the snap-in driving mechanism, and cover the other side with a sealing plate to cover the crack on the wall surface, so as to simultaneously repair the cracks of the inner and outer walls of the block wall during the high-pressure grouting process.

[0030] Step 3: After the suspension frame is fixed, align the grouting pipe of the grouting gun with the crack or insert it into the crack.

[0031] Step 4: When dealing with deep cracks and narrow cracks, after completing Step 3, operate the flow guiding probe to continue to extend into the crack to guide the slurry into the crack.

[0032] Step 5: Repair cracks in the interior and exterior walls of the masonry blocks from bottom to top along the direction of the crack extension. After completing steps one to four, adjust the crack repair operation height upwards to repeat steps one to four for crack repair.

[0033] The present invention provides a device and method for repairing cracks in the interior and exterior walls of masonry blocks, which has the following beneficial effects:

[0034] This device uses a snap-in fixing mechanism combined with a snap-in drive mechanism to fix the suspension frame at the location of the wall crack, so that the grouting gun is stably fixed at the crack for repair, avoiding fatigue caused by prolonged hand handling and affecting the construction quality. At the same time, the grouting gun of this device uses pressurized grouting at the grouting pipe and combined with a flow guide probe to probe deep into the crack to guide the injection of grout, which improves the grouting quality and solves the problem of local cavities in the crack that cannot be filled with grout, thus affecting the repair quality. Overall, it improves the repair quality of cracks in the interior and exterior walls of masonry. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a schematic diagram of a device and method for repairing cracks in the interior and exterior walls of a masonry block, provided in an embodiment of the present invention.

[0037] Figure 2 A side view of a device for repairing cracks in the interior and exterior walls of a masonry block, provided in an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the snap-fit ​​fixing mechanism of a masonry block internal and external wall crack repair device provided in an embodiment of the present invention, showing the snap-fit ​​mechanism snapping into the crack;

[0039] Figure 4 Rear view of a suspension frame for a block wall crack repair device provided in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the externally attached thickened structure of a masonry block internal and external wall crack repair device provided in an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of a triangular guide plate groove extending from a grouting pipe in a masonry block internal and external wall crack repair device provided in an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the anti-detachment locking structure of the grout mass introduction mechanism of a masonry block internal and external wall crack repair device provided in an embodiment of the present invention;

[0043] Figure 8This is a schematic diagram of the triangular guide plate groove of a masonry block internal and external wall crack repair device provided in an embodiment of the present invention;

[0044] Figure 9 A top view of a triangular guide plate groove of a masonry block internal and external wall crack repair device provided in an embodiment of the present invention;

[0045] Figure 10 An embodiment of the present invention provides a device for repairing cracks in the interior and exterior walls of masonry blocks. Figure 6 A magnified view of a portion of the image;

[0046] Figure 11 This is a schematic diagram of the grouting gun angle adjustment mechanism of a block internal and external wall crack repair device provided in an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram illustrating the angle adjustment mechanism of the grouting gun for repairing cracks in the interior and exterior walls of a masonry block, provided in an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Grouting chamber; 2. Grouting pipe; 3. Flow guide probe; 4. Handle; 5. Grouting channel; 6. Attached plate; 7. Rectangular frame; 8. Claw; 9. Clearance opening; 10. Drive push plate; 11. Guide plate; 12. Guide opening; 13. Limiting plate; 14. Support block; 15. Threaded rod; 16. Support frame; 17. Sealing ring; 18. Connecting protrusion; 19. Connecting slot; 20. Triangular flow guide plate groove; 21. Limiting insertion hole; 22. Limiting pin; 23. Support ring; 24. Support seat; 25. Support slot; 26. Fixing cylinder; 27. Supporting rod; 28. Outer attached plate. Detailed Implementation

[0050] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] Please see Figure 1-12 A device for repairing cracks in the interior and exterior walls of masonry blocks, comprising:

[0052] A suspension frame is a support structure attached to the crack in the masonry wall to support the entire device at the crack.

[0053] A snap-in fixing mechanism is installed on the suspension frame to fix the suspension frame to the location of the crack on the masonry wall by snapping it into the crack on the masonry wall surface.

[0054] A snap-in drive mechanism is installed on the suspension frame to drive the snap-in fixing mechanism to snap into the crack on the block wall surface.

[0055] The grouting gun, mounted on a suspension frame, is used to inject grout into cracks in the masonry wall. The grouting gun includes at least a grouting chamber 1, a grouting pipe 2, and a flow guide probe 3. The grouting pipe 2 is coaxially connected to one end of the grouting chamber 1 and communicates with it. The flow guide probe 3 extends into the grouting chamber 1 and the grouting pipe 2 from the opposite end of the grouting chamber 1 and extends into the cavities of the grouting chamber 1 and the grouting pipe 2. The flow guide probe 3 moves telescopically within the grouting chamber 1 and the grouting pipe 2 and extends out from the end of the grouting pipe 2. If the grouting pipe 2 cannot penetrate into the crack, the flow guide probe 3 with a smaller diameter extends into the crack. When the grouting pipe 2 discharges grout, the grout can penetrate deeper into the crack along the flow guide probe 3. At the same time, the flow guide probe 3 also stirs the grout, or even moves it during direct penetration into the crack, to make the grout completely fill the crack and improve the quality of crack repair.

[0056] The grouting gun has a handle 4 on one side of the grout inlet chamber 1. The handle 4 contains a grouting channel 5 that connects to the grout inlet chamber 1 and to an external grouting hose. This allows the grout to be pressurized and ejected from the grouting gun via the external grouting hose and external high-pressure jet grouting equipment. In other words, the grouting gun is only used as the grouting front end; driving the grout and applying pressure requires external equipment such as a shotcrete machine, pump, or air compressor to deliver the grout to the grouting gun and apply pressure. The high-pressure jet grouting equipment is existing technology and will not be described further.

[0057] In summary, this device uses a snap-fit ​​fixing mechanism combined with a snap-fit ​​drive mechanism to fix the suspension frame at the location of the wall crack, ensuring that the grouting gun is stably fixed at the crack for repair, avoiding fatigue caused by prolonged hand handling and thus improving construction quality. Simultaneously, the grouting gun uses pressurized grouting at the injection pipe combined with a flow guide probe to penetrate deep into the crack to guide the grout injection, improving grout injection quality and solving the problem of incomplete grout filling within the crack, leading to internal cavities and affecting repair quality. Overall, this device improves the quality of repairing cracks in both internal and external masonry walls.

[0058] Furthermore, the suspension includes:

[0059] Attachment 6 is a flat plate structure that is directly attached to the wall surface during use to provide stable support for other components.

[0060] And rectangular frame 7, which is vertically connected to the attached plate 6;

[0061] The snap-in drive mechanism is set on the rectangular frame 7.

[0062] Furthermore, the snap-fit ​​fixing mechanism consists of two sets symmetrically arranged at both ends of the attached plate 6. Each set of snap-fit ​​fixing mechanisms includes a claw 8. The middle part of the claw 8 is rotatably connected to the end of the attached plate 6. The reverse end of the claw 8 is inserted into the crack on the masonry wall and extends into the inner side of the rectangular frame 7. The side of the rectangular frame 7 is provided with a clearance opening 9 to avoid the claw 8 from extending in.

[0063] Furthermore, the end of the claw 8 that engages with the crack in the block wall is a pointed cone structure, which makes it easier to insert into the crack. When it continues to be inserted, the squeezing force between the two is used to fix it. The claws on both sides even rotate inward like a grasping action to achieve a clamping effect in the form of claws, thereby achieving a better fixation effect and making the suspension frame more stable.

[0064] Furthermore, the engaging drive mechanism includes:

[0065] The drive push plate 10 is disposed inside the rectangular frame 7 and between the attached plate 6 and the end of the claw 8 that extends into the rectangular frame 7. The two ends of the drive push plate 10 abut against the end of the claw 8 that extends into the rectangular frame 7.

[0066] The guide plate 11 has one end vertically connected to the drive push plate 10. A guide opening 12 is provided on the side of the rectangular frame 7 opposite to the auxiliary plate 6. The other end of the guide plate 11 passes through the guide opening 12 and slides within the guide opening 12. A limit plate 13 is connected to the end of the guide plate 11 opposite to the drive push plate 10 to prevent the guide plate 11 from disengaging from the guide opening 12.

[0067] Support block 14, which is connected to the rectangular frame 7 on one side surface opposite to the attached plate 6, has an internal threaded hole.

[0068] And a threaded rod 15, which is driven into the support block 14 and threadedly connected to the support block 14, and the threaded rod 15 is pressed against the guide plate 11.

[0069] Specifically, the rectangular frame 7 can be held and the driving push plate 10 can be pulled directly by the fingers. At the same time, the guide plate 11 slides in the guide opening 12 to apply force to the claw 8 so that the end of the claw 8 is inserted into the crack for fixation. Then, the threaded rod 15 is rotated. With the support of the support block 14, the threaded rod 15 is rotated until it is pressed against the guide plate 11 so that it cannot move, thereby fixing the driving push plate 10 and fixing the claw 8 in its current state.

[0070] Furthermore, the flow-guiding probe 3 has a linear metal needle structure, which makes it easier to penetrate into the crack to achieve its function due to its smaller size.

[0071] Furthermore, the upper end of the rectangular frame 7 on the suspension frame is provided with a support frame 16 for connecting and supporting the slurry inlet chamber 1.

[0072] Furthermore, a sealing ring 17 is embedded in the grout inlet chamber 1. The sealing ring 17 is located at the end of the grout inlet chamber 1 opposite to the end of the grouting pipe 2. The sealing ring 17 allows the flow guide probe 3 to pass through and the sealing ring 17 and the flow guide probe 3 are relatively sealed. The sealing ring 17 is a dynamic sealing ring. With the sealing form of the dynamic sealing ring 17, the grout flows in the direction of the grout inlet chamber 1 and the grouting pipe 2 under pressure, without affecting the movement of the flow guide probe 3.

[0073] Furthermore, the grouting gun injects non-shrink cement-based grouting material or epoxy-based grouting material into the cracks on the block wall surface, and is not limited to the above materials; it can also be other materials for repairing wall cracks.

[0074] A repair method based on a block-based internal and external wall crack repair device includes the following steps:

[0075] Step 1: Before repairing the crack, first remove the plaster from the surface of the crack. Plaster or sand will affect the grouting effect and the adhesion between the grout and the inner wall of the crack, so it needs to be cleaned.

[0076] Step 2: Fix the suspension frame to the location of the crack on one side of the block wall using the snap-in fixing mechanism and the snap-in driving mechanism. The other side is covered by a sealing plate attached to the wall surface to prevent grout from overflowing from the other side of the wall when grouting on one side. At the same time, the sealing plate attached to the wall surface can also better smooth the grout and improve the aesthetics of the crack repair. This method can simultaneously repair cracks in the inner and outer walls of the block wall during high-pressure grouting. Moreover, this method can complete the repair by grouting only on one side of the inner and outer walls of the block wall, avoiding repeated grouting on both sides and improving construction efficiency.

[0077] Step 3: After the suspension frame is fixed, align the grouting pipe 2 of the grouting gun with the crack or insert it into the crack to carry out subsequent grouting operations.

[0078] Step 4: When dealing with deep cracks and narrow cracks, after completing Step 3, operate the flow guide probe 3 to continue to extend into the crack to guide the grout into the crack, and then carry out the work in a suitable manner to improve construction efficiency.

[0079] Step 5: Repair the cracks in the interior and exterior walls of the masonry blocks from bottom to top along the direction of the crack extension. After completing steps one to four, adjust the crack repair operation height upwards to repeat steps one to four to repair the cracks, so that the inside of the crack is gradually filled with upward accumulation to complete the repair.

[0080] In another embodiment of a device for repairing cracks in the interior and exterior walls of masonry blocks, see [reference needed]. Figure 4 , Figure 5When the crack width of the block is large, the claw 8 in the fixed-size snap-in fixing mechanism cannot be stuck in the crack for fixing. In order to deal with this situation, an external thickening structure is provided on the claw 8 in this embodiment to increase the thickness of the claw 8, so that it can be stably stuck in the crack for fixing.

[0081] Furthermore, the external thickened structure includes external plates 28 symmetrically arranged on both sides of the claw 8. Connecting protrusions 18 are provided on the side of the external plates 28 facing the claw 8. Connecting slots 19 are provided on the side of the claw 8 to accommodate the insertion of the connecting protrusions 18, so that the connecting protrusions 18 and the connecting slots 19 are interlocked to connect the external plates 28 to the side of the claw 8, thereby increasing the width of the claw 8 and thus accommodating cracks with larger widths.

[0082] Furthermore, the outer plate 28 is connected to the claw 8, still forming a pointed cone structure.

[0083] In another embodiment of a device for repairing cracks in the interior and exterior walls of masonry blocks, see [reference needed]. Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 In cases where the crack is deep and wide but the grouting pipe 2 cannot be inserted, or where a larger amount of grout needs to be injected, the flow guide probe 3 alone is still insufficient to effectively introduce a large amount of grout. Therefore, a large grout introduction mechanism is installed inside the grouting pipe 2 to assist the grouting pipe 2 and the flow guide probe 3 in injecting a large amount of grout into the crack.

[0084] Furthermore, the slurry introduction mechanism includes a triangular guide plate groove 20. The cross-section of the triangular guide plate groove 20 is a V-shaped structure so that it forms a groove at the center line position to guide the slurry and better inject a large amount of slurry into the depth of the crack.

[0085] Furthermore, an anti-detachment locking structure is provided between the triangular guide plate groove 20 and the guide probe 3 so that the triangular guide plate groove 20 moves synchronously when the guide probe 3 moves, and the triangular guide plate groove 20 is prevented from detaching from the guide probe 3 and falling off.

[0086] Furthermore, the anti-detachment and locking structure includes a limiting insertion hole 21 formed on the triangular guide plate groove 20 and a limiting pin 22 set on the guide probe 3. The limiting pin 22 is used to connect the triangular guide plate groove 20 and the guide probe 3 by inserting into the limiting insertion hole 21. The limiting insertion hole 21 is located at one end extending into the grouting pipe 2, and the limiting pin 22 is located in the middle part of the guide probe 3. After the ends of the triangular guide plate groove 20 protruding from the grouting pipe 2 and the guide probe 3 are aligned, that is, the limiting pin 22 is aligned with the limiting insertion hole 21 so that the limiting pin 22 can be inserted into the limiting insertion hole 21. Specifically, the limiting pin 22 can only disengage from the limiting insertion hole 21 when the limiting insertion hole 21 and the triangular guide plate groove 20 are completely extended out of the grouting pipe 2. Otherwise, the inner diameter of the grouting pipe 2 will prevent the limiting pin 22 from disengaging from the limiting insertion hole 21. After the triangular guide plate groove 20 is connected to the guide probe 3, the guide probe 3 can drive the triangular guide plate groove 20 to extend out of the grouting pipe 2 and into the crack. Then, the grout pressed out at the grouting pipe 2 will be injected into the extended crack along the triangular guide plate groove 20.

[0087] In another embodiment of a device for repairing cracks in the interior and exterior walls of masonry blocks, see [reference needed]. Figure 11 , Figure 12 After the suspension frame is fixed to the crack location on one side of the masonry wall by the snap-in fixing mechanism and the snap-in driving mechanism, the position of the grouting gun is also fixed, and grout can only be injected in one direction. In the vertical position of its fixed position, especially at the lower position, the grout can only rely on gravity to flow downward naturally to fill the crack. This method is prone to failure to fill the crack, resulting in a cavity and affecting the quality of crack repair. In order to improve this situation, in this embodiment, a grouting gun injection angle adjustment mechanism is set between the support frame 16 and the grouting gun.

[0088] Furthermore, the grouting gun grouting angle adjustment mechanism includes:

[0089] Support ring 23 is connected to the upper end of support frame 16;

[0090] The support base 24 consists of three identical sets arranged sequentially on the top of the support ring 23. The middle set of support base 24 is vertically set, and the two sets of support base 24 on both sides are vertically set on the surface of the support ring 23 in the direction of extension of the support ring 23 to form an inclined arrangement. Each set of support ring 23 has a support slot 25 at the top.

[0091] And a fixed cylinder 26, on the outer surface of which is provided a support rod 27 for inserting into the support slot 25 at the upper end of a corresponding set of support seats 24. The fixed cylinder 26 is used to accommodate the insertion of the grouting pipe 2. After the grouting pipe 2 is inserted, one end of the fixed cylinder 26 is fixedly connected to the grouting chamber 1 through a flange.

[0092] Specifically, after the grouting gun is fixedly connected to the fixed cylinder 26, the grouting direction angle of the grouting gun is determined by inserting the support rod 27 into the support slot 25 at the upper end of the corresponding set of support seats 24. The support rod 27 and the support slot 25 are connected by an interference fit, or by fastening the support rod 27 with fastening screws driven into the side of the support seat 24.

[0093] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for repairing cracks in the interior and exterior walls of masonry blocks, characterized in that, include: A suspension frame is a support structure attached to the crack in the masonry wall. A snap-in fixing mechanism is provided on the suspension frame to fix the suspension frame to the location of the crack on the masonry wall by snapping it into the crack on the masonry wall surface. A snap-in drive mechanism is provided on the suspension frame to drive the snap-in fixing mechanism to snap into the crack on the masonry wall surface; The grouting gun is mounted on the suspension frame to inject grout into the cracks on the block wall to repair the cracks. The grouting gun includes at least a grouting chamber (1), a grouting pipe (2), and a flow guide probe (3). The grouting pipe (2) is coaxially connected to one end of the grouting chamber (1) and communicates with the grouting chamber (1). The flow guide probe (3) extends into the grouting chamber (1) from one end opposite to the grouting pipe (2) and extends into the cavity of the grouting chamber (1) and the grouting pipe (2). The flow guide probe (3) moves telescopically within the grouting chamber (1) and the grouting pipe (2) and extends out from the end of the grouting pipe (2). The grouting gun has a handle (4) on one side of the grouting chamber (1). The handle (4) has a grouting channel (5) to communicate with the grouting chamber (1) and connect to an external grouting hose so that the grout can be pressurized and sprayed out through the grouting gun by the external grouting hose and external high-pressure jet grouting construction tools and equipment. The suspension frame includes: Attached plate (6), which is a planar plate structure; And a rectangular frame (7), which is vertically connected to the attached plate (6); The snap-in drive mechanism is disposed on the rectangular frame (7); The snap-fit ​​fixing mechanism consists of two sets symmetrically arranged at both ends of the attached plate (6). Each set of the snap-fit ​​fixing mechanism includes a claw (8). The middle part of the claw (8) is rotatably connected to the end of the attached plate (6). The reverse end of the claw (8) is inserted into the crack on the masonry wall and extends into the inside of the rectangular frame (7). The side of the rectangular frame (7) is provided with a clearance opening (9) to avoid the claw (8) from extending into it. The end of the claw (8) that engages with the crack on the masonry wall surface is a pointed cone structure; It also includes an external thickening structure, which includes external plates (28) symmetrically arranged on both sides of the claw (8). A connecting protrusion (18) is provided on the side of the external plate (28) facing the claw (8). A connecting slot (19) is provided on the side of the claw (8) to accommodate the insertion of the connecting protrusion (18), so that the connecting protrusion (18) and the connecting slot (19) are interlocked, so that the external plate (28) is connected to the side of the claw (8). The outer plate (28) is connected to the claw (8) to form a pointed cone structure.

2. The device for repairing cracks in the interior and exterior walls of masonry blocks according to claim 1, characterized in that, The locking drive mechanism includes: A drive push plate (10) is disposed inside the rectangular frame (7) and located between the auxiliary plate (6) and the end of the claw (8) that extends into the rectangular frame (7). The two ends of the drive push plate (10) abut against the end of the claw (8) that extends into the rectangular frame (7). A guide plate (11) is vertically connected at one end to the drive push plate (10). A guide opening (12) is provided on the side of the rectangular frame (7) opposite to the auxiliary plate (6). The other end of the guide plate (11) passes through the guide opening (12) and slides within the guide opening (12). A limit plate (13) is connected to the end of the guide plate (11) opposite to the drive push plate (10). A support block (14) is connected to the rectangular frame (7) on one side surface opposite to the attachment plate (6), and the support block (14) has an internal thread hole; And a threaded rod (15) that is driven into the support block (14) and threadedly connected to the support block (14), the threaded rod (15) being pressed against the guide plate (11).

3. The device for repairing cracks in the interior and exterior walls of masonry blocks according to claim 1, characterized in that, The flow guide probe (3) is a straight metal needle structure.

4. The device for repairing cracks in the interior and exterior walls of masonry blocks according to claim 1, characterized in that, The upper end of the rectangular frame (7) on the suspension frame is provided with a support frame (16) for connecting and supporting the slurry inlet cavity (1).

5. A device for repairing cracks in the interior and exterior walls of masonry blocks according to claim 1, characterized in that, The grout inlet chamber (1) is fitted with a sealing ring (17). The sealing ring (17) is located at the end of the grout inlet chamber (1) opposite to the end of the grouting pipe (2). The sealing ring (17) allows the flow guide probe (3) to pass through and the sealing ring (17) and the flow guide probe (3) are relatively sealed. The sealing ring (17) is a dynamic sealing ring.

6. The device for repairing cracks in the interior and exterior walls of masonry blocks according to claim 1, characterized in that, The grouting gun injects non-shrink cement-based grout or epoxy-based grout into the cracks on the block wall surface to repair the cracks.

7. A repair method for a block wall crack repair device according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Before repairing the crack, first remove the plaster from the surface of the crack. Step 2: Fix the suspension frame to the location of the crack on one side of the block wall using the snap-in fixing mechanism and the snap-in driving mechanism, and cover the other side with a sealing plate to cover the crack on the wall surface, so as to simultaneously repair the cracks of the inner and outer walls of the block wall during the high-pressure grouting process. Step 3: After the suspension frame is fixed, align the grouting pipe (2) of the grouting gun with the crack or extend it into the crack; Step 4: When dealing with deep cracks and narrow cracks, after completing Step 3, operate the flow guide probe (3) to continue to extend into the crack to guide the slurry into the crack; Step 5: Repair cracks in the interior and exterior walls of the masonry blocks from bottom to top along the direction of the crack extension. After completing steps one to four, adjust the crack repair operation height upwards to repeat steps one to four for crack repair.

Images