Invisible grouting structure for ancient building brick wall cracks

Abstract

The utility model discloses a kind of invisible grouting structure for ancient building brick wall crack, it is composed of grouting pipe, grouting nozzle and fixed assembly, grouting pipe is slender tubular structure, it is made using multilayer composite flexible material, spiral flow guide rib is set in grouting pipe inside along its axial equal interval, grouting nozzle is overall flat, the side of grouting nozzle is provided with outer thread connecting portion, with the internal thread interface of grouting pipe one end is matched, grouting nozzle is connected with grouting pipe by screw thread, the surface of grouting nozzle is uniformly distributed with multiple micro grout outlet, fixed assembly is arranged in grouting pipe outer wall, the utility model structure design is novel, realize the concealment of grouting process, the uniformity of grouting material distribution and the reliability of structure fixation and sealing, under the prerequisite of not destroying ancient building appearance, efficiently complete the repair work of brick wall crack, protect the historical and cultural value of ancient building.

Description

Technical Field

[0001] This utility model relates to the field of ancient building restoration technology, specifically to an invisible grouting structure for cracks in brick walls of ancient buildings. Background Technology

[0002] Ancient buildings, as important carriers of history and culture, are highly susceptible to cracks and other damage due to the erosion of time, environmental changes, and human factors. While traditional grouting repair techniques can achieve some degree of crack repair, they have several drawbacks. First, the grouting pipes and nozzles in traditional grouting structures are large and obtrusive, significantly disrupting the rustic and intact appearance of the ancient brick walls and severely impacting their historical and cultural value. Second, the lack of proper flow and dispersion design during grouting makes it difficult to evenly fill the cracks, resulting in inconsistent repair effects, with some areas potentially experiencing insufficient or excessive grouting. Third, existing structures are not perfect in terms of fixation and sealing, easily leading to grout pipe displacement and grout leakage during the grouting process, wasting materials and potentially causing secondary damage to the ancient building. Therefore, it is necessary to design an invisible grouting structure for cracks in the brick walls of ancient buildings. Utility Model Content

[0003] The purpose of this invention is to provide an invisible grouting structure for cracks in brick walls of ancient buildings, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an invisible grouting structure for cracks in ancient building brick walls, consisting of an grouting pipe, an grouting nozzle, and a fixing component;

[0005] The grouting pipe has a slender tubular structure and is made of multi-layer composite flexible material.

[0006] The grouting pipe is provided with spiral guide ribs at equal intervals along its axial direction.

[0007] The grouting nozzle is generally flat, and an external threaded connection is provided on one side of the grouting nozzle, which matches the internal threaded interface at one end of the grouting pipe. The grouting nozzle and the grouting pipe are connected by threads, and multiple micro grout outlet holes are evenly distributed on the surface of the grouting nozzle.

[0008] The fixing component is installed on the outer wall of the grouting pipe.

[0009] Preferably, the innermost layer of the multilayer composite flexible material is a high-toughness corrosion-resistant plastic layer; the middle layer is a fiber-reinforced layer woven from high-strength glass fiber or carbon fiber; and the outermost layer is a protective layer with adjustable color.

[0010] Preferably, the fixing component includes multiple barbed fixing pieces, which are integrally formed with the grouting pipe, made of the same material as the outer layer of the grouting pipe, and are triangular in shape. The inclination angle of the barbed fixing pieces is 45°-60°.

[0011] Preferably, it also includes an auxiliary fixing component, which consists of a fixing clip and a fixing bolt. The fixing clip is made of stainless steel and has a U-shaped structure. Its opening width is adapted to the outer diameter of the grouting pipe. The fixing clip is sleeved on the outside of the grouting pipe. The fixing holes at both ends of the fixing clip are aligned with the positions of holes pre-drilled on the brick wall surface. The fixing bolts are installed in the fixing holes.

[0012] Preferably, it also includes a flow guide plate, which is disposed inside the crack. The flow guide plate is made of a thin sheet of flexible metal material and has a plurality of flow guide holes evenly distributed on it. The flow guide plate is fixed to the inner wall of the crack by an adhesive.

[0013] Preferably, the diameter of the grouting pipe is 2mm-3mm, the height of the guide rib is 0.5mm-1mm, and the pitch is 5mm-10mm.

[0014] Beneficial effects:

[0015] (1) The present invention has a novel structural design, which realizes the concealment of the grouting process, the uniformity of the distribution of grouting materials, and the reliability of structural fixation and sealing. Without damaging the appearance of the ancient building, it can efficiently complete the repair of brick wall cracks and protect the historical and cultural value of the ancient building.

[0016] (2) In this utility model, the spiral guide ribs inside the grouting pipe, the micro grout outlet holes on the surface of the grouting nozzle, and the guide plate guide and control the flow and distribution of the grouting material from multiple aspects, ensuring that the grouting material can uniformly fill all parts of the crack, effectively improving the grouting repair effect and avoiding repair defects caused by uneven grouting.

[0017] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more apparent and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the grouting pipe of this utility model;

[0020] Figure 3This is a schematic diagram of the installation of the auxiliary fixing component of this utility model;

[0021] In the diagram: 1. Grouting pipe; 2. Grouting nozzle; 3. Guide rib; 4. Micro grout outlet hole; 5. Corrosion-resistant plastic layer; 6. Fiber reinforcement layer; 7. Protective layer; 8. Barbed fixing plate; 9. Fixing clamp; 10. Fixing bolt; 11. Guide plate; 12. Guide hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0024] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0027] Please see Figures 1-3This utility model discloses an invisible grouting structure for cracks in brick walls of ancient buildings, which consists of a grouting pipe 1, a grouting nozzle 2 and a fixing component.

[0028] The grouting pipe 1 is a slender tubular structure made of multi-layer composite flexible material. The innermost layer of the multi-layer composite flexible material is a high-toughness corrosion-resistant plastic layer 5, which has good chemical stability and can withstand the corrosion of the grouting material, while ensuring the flexibility of the grouting pipe, making it easy to fit into the inner wall of the brick wall crack. The middle layer is a fiber reinforcement layer 6, which is woven from high-strength glass fiber or carbon fiber, significantly enhancing the overall strength and deformation resistance of the grouting pipe and preventing the grouting pipe from cracking or deforming due to pressure during the grouting process. The outermost layer is a color-adjustable protective layer 7, which is mixed with a special dyeing process to match the actual color of the ancient building brick wall, so that the grouting pipe can blend into the brick wall after installation and achieve an invisible effect.

[0029] The grouting pipe 1 has spiral guide ribs 3 evenly spaced along its axial direction. The diameter of the grouting pipe 1 is 2mm-3mm, the height of the guide ribs 3 is 0.5mm-1mm, and the pitch is 5mm-10mm. The presence of the spiral guide ribs can, on the one hand, guide the grouting material to flow uniformly along the axial direction of the grouting pipe, avoiding local accumulation or uneven flow velocity; on the other hand, during the flow of the grouting material, the friction and collision between the guide ribs and the material can promote better dispersion of the material, thereby improving the uniformity and density of the grouting.

[0030] The grouting nozzle 2 is generally flat. One side of the grouting nozzle 2 is provided with an external threaded connection part, which matches the internal threaded interface at one end of the grouting pipe 1. The grouting nozzle 2 and the grouting pipe 1 are connected by threads. Multiple micro grouting holes 4 are evenly distributed on the surface of the grouting nozzle 2. The micro grouting holes can evenly spray the grouting material into the crack in a fine stream, further ensuring the uniformity of grouting.

[0031] In this invention, a fixing component is disposed on the outer wall of the grouting pipe 1. The fixing component includes multiple barbed fixing pieces 8, which are integrally formed with the grouting pipe 1 and made of the same material as the outer layer of the grouting pipe 1. The barbed fixing pieces 8 are triangular in shape and have an inclination angle of 45°-60°. When the grouting pipe is inserted into the crack, the barbed fixing pieces can embed into the bricks around the crack, providing strong friction and preventing the grouting pipe from shifting during the grouting process.

[0032] This utility model also includes an auxiliary fixing component, which consists of a fixing clip 9 and a fixing bolt 10. The fixing clip 9 is made of stainless steel and has a U-shaped structure. Its opening width is adapted to the outer diameter of the grouting pipe 1. The fixing clip 9 is sleeved on the outside of the grouting pipe 1. The fixing holes at both ends of the fixing clip 9 are aligned with the positions of pre-drilled holes on the brick wall surface. The fixing bolt 10 is installed in the fixing holes. The fixing clip further enhances the fixing effect of the grouting pipe, and is especially suitable for situations where the crack width is large or the brickwork around the crack is relatively loose.

[0033] In addition, this utility model also includes a guide plate 11, which is disposed inside the crack. The guide plate 11 is made of a thin, flexible metal material, and has multiple evenly distributed guide holes 12. Through these guide holes, the grouting material can be guided to diffuse more evenly inside the crack. The guide plate is fixed to the inner wall of the crack with an adhesive. The adhesive is an epoxy resin adhesive with good compatibility with the ancient building brick wall, ensuring a firm fixation without damaging the brick wall.

[0034] The sealing material used in this invention is a specially formulated paste-like composite material, mainly composed of natural materials similar to those used in ancient building brick walls, such as clay, fine sand, and lime, as well as appropriate amounts of polymer binders and additives. Clay and fine sand, as the main aggregate components, ensure that the texture and color of the sealing material are similar to the brick wall, achieving an invisible effect. Lime acts as a binder and hardener, giving the sealing material a certain strength after drying. The polymer binder is an environmentally friendly acrylic emulsion, which enhances the adhesion between the sealing material and the brick wall and grouting pipe, ensuring a sealing effect. Additives include waterproofing agents and retarders. The waterproofing agent improves the waterproof performance of the sealing material, preventing moisture from seeping into the cracks and affecting the repair effect, while the retarder extends the workable time of the sealing material, facilitating construction.

[0035] Working principle: Use a small electric cleaning tool to remove dust, debris, and loose bricks from inside the crack, ensuring the crack's inner wall is clean and smooth. For wider cracks, use a small chisel to trim them appropriately, making the crack width relatively uniform. Cut the grouting pipe to an appropriate length according to the crack's length and shape. Connect one end of the cut grouting pipe to the grouting nozzle via a thread, then slowly insert the grouting pipe into the crack along its length. The barbed fixing pieces on the grouting pipe will embed into the surrounding bricks, providing initial fixation. After the grouting pipe is inserted into the predetermined position, for areas with larger crack widths or looser brickwork, the grouting pipe is further fixed to the brick wall using fixing clips and bolts. Epoxy resin is used to fix the guide plate at a suitable location inside the crack, ensuring a tight fit between the guide plate and the inner wall of the crack, and that the guide holes effectively guide the flow of the grouting material. Then, the prepared sealing material is evenly applied to the crack surface and around the grouting nozzle using a small scraper or brush. After the sealing material has dried and cured, the grouting material is injected into the grouting pipe through the grouting nozzle using the grouting equipment.

[0036] In summary, this utility model features a novel structural design that achieves concealment of the grouting process, uniform distribution of the grouting material, and reliability of structural fixation and sealing. It efficiently repairs brick wall cracks without damaging the appearance of the ancient building, thus protecting its historical and cultural value.

[0037] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An invisible grouting structure for cracks in brick walls of ancient buildings, characterized in that: It consists of a grouting pipe (1), a grouting nozzle (2), and a fixing assembly; The grouting pipe (1) is a slender tubular structure and is made of multi-layer composite flexible material; The grouting pipe (1) has spiral guide ribs (3) arranged at equal intervals along its axial direction inside. The grouting nozzle (2) is flat in shape. An external threaded connection part is provided on one side of the grouting nozzle (2), which matches the internal threaded interface at one end of the grouting pipe (1). The grouting nozzle (2) and the grouting pipe (1) are connected by threads. Multiple micro grout outlet holes (4) are evenly distributed on the surface of the grouting nozzle (2). The fixing component is installed on the outer wall of the grouting pipe (1).

2. The concealed grouting structure for cracks in ancient building brick walls according to claim 1, characterized in that: The innermost layer of the multilayer composite flexible material is a high-toughness corrosion-resistant plastic layer (5); the middle layer is a fiber-reinforced layer (6), which is woven from high-strength glass fiber or carbon fiber; and the outermost layer is a protective layer (7) with adjustable color.

3. The concealed grouting structure for cracks in ancient building brick walls according to claim 1, characterized in that: The fixing component includes multiple barbed fixing pieces (8), which are integrally formed with the grouting pipe (1) and made of the same material as the outer layer of the grouting pipe (1). The shape of the barbed fixing pieces (8) is triangular, and the tilt angle of the barbed fixing pieces (8) is 45°-60°.

4. The concealed grouting structure for cracks in ancient building brick walls according to claim 3, characterized in that: It also includes an auxiliary fixing component, which consists of a fixing clip (9) and a fixing bolt (10). The fixing clip (9) is made of stainless steel and has a U-shaped structure. Its opening width is adapted to the outer diameter of the grouting pipe (1). The fixing clip (9) is sleeved on the outside of the grouting pipe (1). The fixing holes at both ends of the fixing clip (9) are aligned with the positions of holes pre-drilled on the surface of the brick wall. The fixing bolt (10) is installed in the fixing holes.

5. The concealed grouting structure for cracks in ancient building brick walls according to claim 1, characterized in that: It also includes a flow guide plate (11), which is disposed inside the crack. The flow guide plate (11) is made of a thin sheet of flexible metal material. Multiple flow guide holes (12) are evenly distributed on the flow guide plate (11). The flow guide plate (11) is fixed to the inner wall of the crack by an adhesive.

6. The concealed grouting structure for cracks in ancient building brick walls according to claim 1, characterized in that: The diameter of the grouting pipe (1) is 2mm-3mm, the height of the guide rib (3) is 0.5mm-1mm, and the pitch is 5mm-10mm.

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