In-situ repair and reinforcement method for external wall insulation board of existing building

Abstract

The application discloses an in-situ repairing and reinforcing method for the external wall insulation board of existing buildings, which comprises the following steps: S1, base construction; S2, inner felt construction; S3, waterproof and anti-cracking felt construction; S4, fixed pin construction; S5, outer felt construction; and S6, outer facing construction. The application has the following advantages and effects: a new reinforcing system is formed by adopting a high-tensile-strength and high-anti-permeability composite felt glue layer and fixed pins with high tensile bearing capacity, thereby playing a role in resisting negative wind pressure and thermal stress, avoiding large-area falling of the external wall insulation system of the building due to long-term physical stress and construction uncertain factors, making the repairing part safe and reliable and long in service life, and completely fusing the original wall surface with the new wall surface while retaining the original wall surface and reducing the generation of construction garbage.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a method for in-situ repair and reinforcement of the exterior wall insulation board of an existing building. Background Technology

[0002] The renovation and repair of the exterior wall insulation system of existing buildings is a current research hotspot. Some achievements have been made in China in addressing and repairing problems such as cracking, leakage, hollowing, and large-area detachment of exterior wall insulation.

[0003] In the traditional repair process for areas where the exterior wall insulation layer has detached, the exterior wall is usually removed entirely or partially, and then directly filled and repaired with cement mortar. However, this repair method cannot achieve a complete fusion between the original wall surface and the new wall surface, and it is easy for quality problems such as cracking and hollowing to reappear, affecting the repair effect and needing improvement. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a method for in-situ repair and reinforcement of the external wall insulation board of existing buildings, which has the advantage of improving the repair effect.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for in-situ repair and reinforcement of the exterior wall insulation board of an existing building, comprising the following steps:

[0006] S1, Base construction: Drill holes in the exterior wall insulation boards that have been found to have problems such as hollowness and cracking, and inject grout under pressure into the holes. If there are local exterior wall insulation boards that have fallen off, clean the defective areas, and then use adhesive to bond the new insulation board to the repair position, fill the defective areas, and make the surface of the new insulation board flush with the surface of the original insulation board. Use interface leveling material to level the surface.

[0007] S2, Inner layer felt construction: A layer of felt is laid on the leveling layer using a felt adhesive laying machine, and the felt adhesive covers the joint between the original exterior finish and the leveling layer.

[0008] S3, Waterproof and crack-resistant felt construction: Apply a layer of glue to the laid inner layer felt, and then bond and fix the waterproof and crack-resistant felt.

[0009] S4, fixing pin construction: Drill holes in the exterior wall insulation board, extending the drilled holes into the original concrete layer, and then install fixing pins to press and fix the waterproof and crack-resistant felt, thereby reinforcing the repaired area.

[0010] S5, outer layer felt construction: use a felt adhesive laying machine to lay a layer of felt adhesive on the waterproof and crack-resistant felt, and make the felt adhesive cover all the fixing pins;

[0011] S6, Exterior finish construction: Mix the paint according to the original exterior finish color and apply the paint evenly to the surface of the outer felt.

[0012] In a preferred embodiment, the present invention may be further configured such that the felt adhesive laying machine comprises:

[0013] The support frame is a rectangular frame with handles on both sides;

[0014] An adhesive extrusion mechanism is located at the lower end of the support frame and is used to apply adhesive.

[0015] The compaction mechanism includes a compaction frame and a compaction roller. The compaction frame is horizontally arranged at the upper end of the front end of the support frame and extends horizontally outward. The compaction roller is horizontally rotatably connected to the compaction frame.

[0016] A cutting mechanism is mounted on the compaction frame and is used to cut the felt adhesive.

[0017] A felt roller is horizontally rotatably connected to the tail end of the support frame and is used for wrapping felt. The front end of the support frame is provided with a discharge port located between the extrusion mechanism and the compaction mechanism.

[0018] In a preferred embodiment, the present invention can be further configured as follows: the extrusion mechanism includes an injection nozzle, an injection tube, a cover, and a glue brush. The injection nozzle is located below the front end of the support frame. The injection tube is connected to the injection nozzle and is horizontally arranged inside the support frame. The cover is connected to the injection nozzle and is elongated. The glue brush is rotatably connected to the cover and penetrates the cover. The glue brush has multiple uniformly arranged glue dispensing grooves.

[0019] In a preferred embodiment, the present invention can be further configured such that: the dispensing tube is provided with a tube for inserting the dispensing nozzle, the outer wall of the tube is provided with a retaining ring, and the inner wall of the dispensing nozzle is provided with a retaining groove for the retaining ring to be inserted.

[0020] In a preferred embodiment, the present invention can be further configured such that: a piston plate is horizontally slidably connected inside the glue injection tube, a rack is horizontally disposed on the piston plate and slidably connected to the support frame, and a gear that meshes with the rack is disposed on the felt roller.

[0021] In a preferred embodiment, the present invention can be further configured such that: the cutting mechanism includes a slider, a support block, a blade, and a handle; the slider is laterally slidably connected to the compaction frame; the support block is rotatably connected to the slider and a torsion spring is provided at the rotatable position; the blade is disposed above the support block; and the handle is disposed on the back side of the support block.

[0022] In a preferred embodiment, the present invention may be further configured such that: a clamping plate is provided inside the discharge port to hold the upper and lower sides of the felt adhesive.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. By using a composite felt layer with high tensile strength and high impermeability, combined with fixing pins with high tensile load-bearing capacity, a new reinforcement system is formed. This system can resist negative wind pressure and thermal stress, and prevent large-area detachment of the building's external wall insulation system due to long-term physical stress and construction uncertainties. This makes the repaired parts safe and reliable with a long service life, and allows the original wall surface to be completely integrated with the new wall surface. At the same time, it can preserve the original wall surface and reduce the generation of construction waste.

[0025] 2. By setting up a semi-automatic felt-bonding machine, automatic glue extrusion and automatic laying can be achieved, improving construction efficiency and convenience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 This is a structural schematic diagram of Example 2;

[0028] Figure 3 This is a schematic diagram of the compaction mechanism and cutting mechanism in Example 2;

[0029] Figure 4 This is a schematic diagram of the extrusion mechanism in Example 2;

[0030] Figure 5 This is a schematic diagram of the internal structure of the extrusion mechanism in Example 2.

[0031] Reference numerals: 1. Support frame; 11. Handle; 12. Discharge port; 13. Clamping plate; 2. Glue extrusion mechanism; 21. Glue injection nozzle; 22. Glue injection tube; 23. Cover; 24. Glue brush; 25. Glue discharge groove; 3. Compaction mechanism; 31. Compaction frame; 32. Compaction roller; 4. Cutting mechanism; 41. Slider; 42. Support block; 43. Blade; 44. Handle; 45. Torsion spring; 5. Felt roller; 6. Insert tube; 61. Snap ring; 62. Snap groove; 7. Piston plate; 71. Rack; 72. Gear. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1:

[0034] like Figure 1 As shown, a method for in-situ repair and reinforcement of the exterior wall insulation board of an existing building includes the following steps:

[0035] S1, Base construction: Drill holes in the exterior wall insulation boards that have been found to have problems such as hollowness and cracking, and inject grout under pressure into the holes. If there are local exterior wall insulation boards that have fallen off, clean the defective areas, and then use adhesive to bond the new insulation board to the repair position, fill the defective areas, and make the surface of the new insulation board flush with the surface of the original insulation board. Use interface leveling material to level the surface.

[0036] S2, Inner layer felt construction: A layer of felt is laid on the leveling layer using a felt laying machine, and the felt covers the joint between the original exterior finish and the leveling layer.

[0037] S3, Waterproof and Crack-Resistant Felt Construction: Apply a layer of adhesive to the laid inner layer of felt, and then bond and fix the waterproof and crack-resistant felt.

[0038] S4, fixing pin construction: Drill holes in the exterior wall insulation board, extending the drilled holes into the original concrete layer, and then install fixing pins to press and fix the waterproof and crack-resistant felt, thereby reinforcing the repaired area.

[0039] S5, outer layer felt construction: use a felt adhesive laying machine to lay a layer of felt adhesive on the waterproof and crack-resistant felt, and make the felt adhesive cover all the fixing pins.

[0040] S6, Exterior finish construction: Mix the paint according to the original exterior finish color and apply the paint evenly to the surface of the outer felt.

[0041] Therefore, by using a composite felt layer with high tensile strength and high impermeability, combined with fixing pins with high tensile load-bearing capacity, a new reinforcement system is formed to resist negative wind pressure and thermal stress. This prevents the building's external wall insulation system from falling off in large areas due to long-term physical stress and construction uncertainties, making the repaired area safe, reliable, and long-lasting. It also allows the original wall surface to fully integrate with the new wall surface, while preserving the original wall surface and reducing construction waste.

[0042] Example 2:

[0043] like Figure 2 As shown, the felt rubber laying machine includes a support frame 1, a rubber extrusion mechanism 2, a compaction mechanism 3, a cutting mechanism 4, and a felt rubber roller 5.

[0044] like Figure 2 As shown, the support frame 1 is a rectangular frame with handles 11 on both sides. The glue extrusion mechanism 2 is located at the lower end of the support frame 1 and is used to apply glue.

[0045] like Figure 2 , Figure 3As shown, the compaction mechanism 3 includes a compaction frame 31 and a compaction roller 32. The compaction frame 31 is horizontally arranged at the upper end of the front end of the support frame 1 and extends horizontally outward. The compaction roller 32 is horizontally rotatably connected to the compaction frame 31.

[0046] like Figure 3 As shown, the cutting mechanism 4 is mounted on the compaction frame 31 and is used to cut the felt adhesive. The cutting mechanism 4 includes a slider 41, a support block 42, a blade 43, and a handle 44.

[0047] like Figure 3 As shown, slider 41 is slidably connected to compaction frame 31, support block 42 is rotatably connected to slider 41, and torsion spring 45 is provided at the rotatable position. Blade 43 is provided above support block 42, and handle 44 is provided on the back side of support block 42.

[0048] like Figure 2 As shown, the felt roller 5 is horizontally rotatably connected to the tail end of the support frame 1 and is used for wrapping the felt. The front end of the support frame 1 is provided with a discharge port 12 located between the extrusion mechanism 2 and the compaction mechanism 3. The discharge port 12 is provided with clamping plates 13 that hold the upper and lower sides of the felt, so as to realize the smoothing operation of the felt and ensure the flat laying of the felt.

[0049] When it is necessary to lay felt adhesive at the repair location, hold the handle 44 on the support frame 1 so that the glue extrusion mechanism 2 at the front end of the support frame 1 touches the exterior wall, and then control the support frame 1 to move from top to bottom a distance of 1-2cm. At this time, the glue extrusion mechanism 2 will apply glue to the exterior wall.

[0050] Then the felt adhesive is pulled out on the felt roller 5, so that the felt adhesive passes through the discharge port 12 and is laid on the outer wall that has been coated with adhesive. Then the support frame 1 continues to move downward. At this time, the extrusion mechanism 2 always squeezes out the adhesive and applies it to the outer wall. Since the end of the felt adhesive is bonded and fixed, the felt adhesive is automatically unwound during the movement of the support frame 1, so that the felt adhesive is laid on the outer wall.

[0051] Subsequently, during the movement of the support frame 1, the compaction roller 32 forcefully presses and fixes the felt adhesive to the outer wall, achieving stable laying of the felt adhesive. Then, the control handle 44 drives the support block 42 to rotate, and the support block 42 drives the blade 43 to move synchronously until the blade 43 touches the felt adhesive. At this point, the control block 42 drives the slider 41 to slide laterally, achieving automatic cutting of the felt adhesive, which facilitates the laying of the next strip of felt adhesive.

[0052] like Figure 2 , Figure 4 , Figure 5As shown, the glue extrusion mechanism 2 includes a glue nozzle 21, a glue tube 22, a cover 23, and a glue brush 24. The glue nozzle 21 is located below the front end of the support frame 1. The glue tube 22 is connected to the glue nozzle 21 and is horizontally arranged inside the support frame 1. The cover 23 is connected to the glue nozzle 21 and is elongated. The glue brush 24 is rotatably connected inside the cover 23 and penetrates the cover 23. The glue brush 24 has multiple evenly spaced glue grooves 25.

[0053] When the extrusion mechanism 2 is working, the adhesive in the injection tube 22 can enter the housing 23. At the same time, the adhesive brush 24 is in contact with the exterior wall. During the rotation of the adhesive brush 24, the adhesive brush 24 can apply a part of the adhesive to the exterior wall, while another part of the adhesive overflows along the adhesive outlet groove 25 onto the exterior wall, forming strips of adhesive. This makes the felt adhesive firmly bonded and fixed to the exterior wall, achieving stable laying of the felt adhesive.

[0054] like Figure 2 , Figure 4 , Figure 5 As shown, the dispensing tube 22 is provided with an insert tube 6 for connecting to the dispensing nozzle 21. The outer wall of the insert tube 6 is provided with a retaining ring 61, and the inner wall of the dispensing nozzle 21 is provided with a retaining groove 62 for the retaining ring 61 to be inserted. Therefore, by providing a detachable dispensing tube 22, it is possible to quickly disassemble and replace the dispensing tube 22 after use, which is convenient for continuous operation.

[0055] like Figure 2 , Figure 4 , Figure 5 As shown, a piston plate 7 is horizontally slidably connected inside the glue injection tube 22. A rack 71, which is horizontally slidably connected to the support frame 1, is provided on the piston plate 7. A gear 72 that meshes with the rack 71 is provided on the felt roller 5.

[0056] When the felt adhesive is laid, as the felt adhesive is unwound, the felt adhesive roller 5 is in a rotating state, and drives the gear 72 to rotate synchronously. At this time, under the cooperation of the gear 72 and the rack 71, the rack 71 pushes the piston plate 7 to slide in the glue injection tube 22, thereby pressurizing the glue liquid in the glue injection tube 22, so that the glue liquid can flow out smoothly and achieve stable glue extrusion operation.

[0057] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A method for in-situ repair and reinforcement of the exterior wall insulation panels of existing buildings, characterized in that: It comprises the following steps: S1, base construction, drilling holes on the external wall insulation board where there are problems of hollowing and cracking, and pressurized grouting in the holes, if there is local external wall insulation board falling off, then cleaning the defect position, then sticking the new insulation board at the repair position with the adhesive, filling the defect position, and making the new insulation board flush with the surface of the original insulation board, and leveling with the interface leveling material; S2, inner felt construction, laying a layer of felt glue on the leveling layer with a felt glue laying machine, and covering the felt glue on the original outer surface and the joint position of the leveling layer; The felt glue laying machine comprises: A support frame (1) is provided in the form of a rectangular frame, and handles (11) are provided on both sides; An adhesive extruding mechanism (2) is provided at the lower end of the support frame (1) and is used for coating adhesive; A compaction mechanism (3) comprises a compaction frame (31) and a compaction roller (32), the compaction frame (31) is horizontally provided at the upper end of the front end position of the support frame (1) and extends horizontally outward, and the compaction roller (32) is horizontally rotatably connected to the compaction frame (31); A cutting mechanism (4) is provided on the compaction frame (31) and is used for cutting off the felt glue; A felt glue roller (5) is horizontally rotatably connected to the tail end position of the support frame (1) and is used for winding the felt glue, and a discharge port (12) is provided at the front end position of the support frame (1) between the adhesive extruding mechanism (2) and the compaction mechanism (3); The adhesive extruding mechanism (2) comprises an adhesive injection nozzle (21), an adhesive injection pipe (22), a cover (23), and an adhesive brush (24), the adhesive injection nozzle (21) is provided below the front end position of the support frame (1), the adhesive injection pipe (22) is connected to the adhesive injection nozzle (21) and is horizontally provided in the support frame (1), the cover (23) is connected to the adhesive injection nozzle (21) and is provided in the form of a long strip, and the adhesive brush (24) is rotatably connected in the cover (23) and penetrates through the cover (23), and a plurality of adhesive outlet grooves (25) are uniformly provided on the adhesive brush (24); The adhesive injection pipe (22) is provided with a spigot (6) for inserting the adhesive injection nozzle (21), the outer wall of the spigot (6) is provided with a snap ring (61), and the inner wall of the adhesive injection nozzle (21) is provided with a clamping groove (62) for embedding the snap ring (61); A piston plate (7) is horizontally slidably connected in the adhesive injection pipe (22), the piston plate (7) is horizontally provided with a rack (71) slidably connected to the support frame (1), and the felt glue roller (5) is provided with a gear (72) engaged with the rack (71); S3, waterproof and anti-cracking felt construction, brushing a layer of adhesive on the laid inner layer felt, and then bonding and fixing the waterproof and anti-cracking felt; S4, fixed pin construction, drilling holes in the external wall insulation board, making the drilled holes penetrate into the original concrete layer, and then installing fixed pins, and using the fixed pins to compress and fix the waterproof and anti-cracking felt, and realizing the reinforcement of the repair position. S5, outer layer felt construction, using felt glue laying machine to lay a layer of felt glue on the waterproof and crack-resistant felt, and make the felt glue cover all the fixing pins; S6, outer facing construction, according to the color of the original outer facing, paint is prepared and evenly coated on the surface of the outer layer felt.

2. The method for in-situ repairing and reinforcing the external wall insulation board of an existing building according to claim 1, characterized in that: The cutting mechanism (4) comprises a sliding block (41), a supporting block (42), a blade (43) and a handle (44), the sliding block (41) is transversely and slidingly connected to the compaction frame (31), the supporting block (42) is rotatably connected to the sliding block (41), and a torsional spring (45) is arranged at a rotating position of the supporting block (42), the blade (43) is arranged above the supporting block (42), and the handle (44) is arranged at the back side of the supporting block (42).

3. The method for in-situ repairing and reinforcing the external wall insulation board of an existing building according to claim 1, characterized in that: The discharge port (12) is provided with clamping plates (13) clamping the upper and lower sides of the felt glue.

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