In-situ repairing and reinforcing method for external wall insulation board of existing building

Abstract

The invention discloses an in-situ repairing and reinforcing method for an external wall insulation board of an existing building. The in-situ repairing and reinforcing method comprises the following steps that S1, a base is constructed; s2, inner-layer felt construction; s3, waterproof anti-crack felt construction; s4, fixing pin construction; s5, outer layer felt construction; and S6, exterior facing construction. The composite felt rubber layer has the following advantages and effects that the composite felt rubber layer with high tensile strength and high impermeability is adopted and matched with the fixing pins with high tensile bearing capacity to form a new reinforcing system, so that the effect of resisting negative wind pressure and thermal stress is achieved; large-area falling of a building external wall heat insulation system due to long-term physical stress and uncertain construction factors is avoided, a repaired part is safe and reliable, the service life is long, an original wall face and a new wall face are completely fused, meanwhile, the original wall face can be reserved, and construction waste is reduced.

Description

Technical Field

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

[0002] The renewal and repair of the exterior wall insulation system of existing buildings is a current research hotspot. Partial results have been achieved in China in the treatment and repair of problems such as cracking, leakage, hollowing and large-scale falling off of exterior wall insulation.

[0003] In the traditional repair process of the fallen-off parts of the exterior wall insulation layer, the exterior wall is usually removed in whole or in part, and then directly filled and repaired with cement mortar. However, this repair method cannot achieve complete integration of the original wall surface and the new wall surface, and it is easy to have quality problems such as cracking and hollowing, which affects the repair effect and needs to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a method for in-situ repair and reinforcement of the exterior wall insulation panels of an existing building, which has the advantage of improving the repair effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A method for in-situ repair and reinforcement of the exterior wall insulation board of an existing building, comprising the following steps: S1, base construction, drilling holes in the external wall insulation boards that are detected to have hollows and cracks, and pressurized grouting in the holes. If there is a partial detachment of the external wall insulation board, the defective position is cleaned, and then the new insulation board is bonded to the repair position with glue to fill the defective position, and the surface of the new insulation board is made flush with the original insulation board, and the interface leveling material is used for leveling; S2, inner layer felt construction, using a felt glue laying machine to lay a layer of felt glue on the leveling layer, and make the felt glue cover the joint position between the original outer facing and the leveling layer; S3, waterproof and anti-cracking felt construction, apply a layer of glue on the laid inner layer of felt, and then bond and fix the waterproof and anti-cracking felt; S4, fixing pin construction, drilling holes on the exterior wall insulation board, so that the drilled holes are penetrated into the original concrete layer, and then installing fixing pins, using the fixing pins to compress and fix the waterproof anti-cracking felt to achieve reinforcement of the repair position; S5, outer layer felt construction, using a felt glue laying machine to lay a layer of felt glue on the waterproof and anti-cracking felt, and make the felt glue cover all the fixing pins; S6, exterior finishing construction, mix the paint according to the original exterior finishing color, and apply the paint evenly on the outer felt surface.

[0006] In a preferred example, the present invention can be further configured as follows: the felt glue laying machine comprises: The support frame is arranged in a rectangular frame and has handles on both sides; A glue squeezing mechanism is disposed at the lower end of the support frame and is used to apply glue; The compaction mechanism comprises a compaction frame and a compaction roller, wherein the compaction frame is horizontally arranged at the upper end of the front end of the support frame and extends horizontally outward, and the compaction roller is horizontally rotatably connected to the compaction frame; A cutting mechanism, arranged on the compacting frame and used for cutting the felt glue; The felt rubber roller is horizontally rotatably connected to the rear end of the support frame and is provided with felt rubber for winding, and a discharge port located between the rubber squeezing mechanism and the compacting mechanism is arranged at the front end of the support frame.

[0007] In a preferred example, the present invention can be further configured as follows: the glue extrusion mechanism includes a glue injection nozzle, a glue injection tube, a cover shell and a glue brush, the glue injection nozzle is arranged below the front end position of the support frame, the glue injection tube is connected to the glue injection nozzle and is horizontally arranged in the support frame, the cover shell is connected to the glue injection nozzle and is arranged in a long strip shape, the glue brush is rotatably connected in the cover shell and passes through the cover shell, and a plurality of circles of glue outlet grooves are evenly arranged on the glue brush.

[0008] In a preferred example, the present invention can be further configured as follows: the glue injection tube is provided with an insertion tube for plugging into the glue injection nozzle, the outer wall of the insertion tube is provided with a clamping ring, and the inner wall of the glue injection nozzle is provided with a clamping groove for the clamping ring to be embedded.

[0009] In a preferred example, the present invention can be further configured as follows: a piston plate is horizontally slidably connected in the glue injection tube, a rack is horizontally arranged on the piston plate and slidably connected to the support frame, and a gear meshing with the rack is arranged on the felt rubber roller.

[0010] In a preferred example, the present invention can be further configured as follows: the cutting mechanism includes a slider, a support block, a blade and a handle, the slider is laterally slidably connected to the compacting frame, the support block is rotationally connected to the slider, and a torsion spring is provided at the rotation position, the blade is provided above the support block, and the handle is provided on the back side of the support block.

[0011] In a preferred example, the present invention can be further configured as follows: clamping plates for clamping the felt glue on the upper and lower sides are provided in the discharge port.

[0012] In summary, the present invention has the following beneficial effects: 1. By adopting a composite felt-rubber layer with high tensile strength and high impermeability, and combining it with a fixing pin with high tensile bearing capacity to form a new reinforcement system, it can resist negative wind pressure and thermal stress, and prevent the building's exterior wall insulation system from falling off in a large area due to long-term physical stress and construction uncertainties, making the repaired parts safe and reliable, with a long service life, and making the original wall surface completely integrated with the new wall surface, while being able to retain the original wall surface and reduce the generation of construction waste; 2. By setting up a semi-automatic felt glue laying machine, automatic glue extrusion and automatic laying can be achieved, improving construction efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of Example 1; Figure 2 is a schematic structural diagram of Example 2; Figure 3 is a schematic structural diagram of a compacting mechanism and a cutting mechanism of Example 2; Figure 4 is a structural schematic diagram of a glue extrusion mechanism of Example 2; Figure 5 It is a schematic diagram of the internal structure of the glue squeezing mechanism of Example 2.

[0014] Figure numerals: 1. support frame; 11. handle; 12. discharge port; 13. clamp; 2. glue squeezing mechanism; 21. glue injection nozzle; 22. glue injection tube; 23. cover shell; 24. glue brush; 25. glue discharge groove; 3. compacting mechanism; 31. compacting frame; 32. compacting roller; 4. cutting mechanism; 41. slider; 42. support block; 43. blade; 44. handle; 45. torsion spring; 5. felt rubber roller; 6. insert tube; 61. retaining ring; 62. retaining groove; 7. piston plate; 71. rack; 72. gear. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0016] Embodiment 1: like Figure 1 As shown, a method for in-situ repair and reinforcement of the exterior wall insulation board of an existing building comprises the following steps: S1, base construction, drilling holes in the exterior wall insulation boards that are found to have hollows and cracks, and pressurized grouting in the holes. If there is partial detachment of the exterior wall insulation boards, clean the defective locations, and then use glue to bond the new insulation boards to the repair locations, fill the defective locations, and make the new insulation boards flush with the surfaces of the original insulation boards, and use interface leveling materials for leveling.

[0017] S2, inner layer felt construction, use a felt glue laying machine to lay a layer of felt glue on the leveling layer, and make the felt glue cover the joint position between the original exterior facing and the leveling layer.

[0018] S3, construction of waterproof and anti-cracking felt, apply a layer of glue on the laid inner layer of felt, and then bond and fix the waterproof and anti-cracking felt.

[0019] S4, fixing pin construction, drilling holes on the exterior wall insulation board, so that the holes drilled have been penetrated into the original concrete layer, and then installing the fixing pins, using the fixing pins to compress and fix the waterproof and anti-cracking felt to achieve reinforcement of the repair position.

[0020] S5, outer layer felt construction, use a felt glue laying machine to lay a layer of felt glue on the waterproof and anti-cracking felt, and make the felt glue cover all the fixing pins.

[0021] S6, exterior finishing construction, mix the paint according to the original exterior finishing color, and apply the paint evenly on the outer felt surface.

[0022] Therefore, a new reinforcement system is formed by adopting a composite felt-glue layer with high tensile strength and high impermeability, in combination with fixing pins with high tensile bearing capacity, to resist negative wind pressure and thermal stress, and to avoid large-scale shedding of the building's exterior wall insulation system due to long-term physical stress and construction uncertainties. This ensures that the repaired area is safe and reliable, with a long service life, and that the original wall surface is completely integrated with the new wall surface. At the same time, the original wall surface can be retained, reducing the generation of construction waste.

[0023] Embodiment 2: like Figure 2 As shown, the felt rubber laying machine includes a support frame 1, a rubber squeezing mechanism 2, a compacting mechanism 3, a cutting mechanism 4 and a felt rubber roller 5.

[0024] like Figure 2 As shown, the support frame 1 is arranged in a rectangular frame, and handles 11 are arranged on both sides. The glue squeezing mechanism 2 is arranged at the lower end of the support frame 1, and is used to apply glue.

[0025] like Figure 2 , Figure 3 As shown, the compacting mechanism 3 includes a compacting frame 31 and a compacting roller 32 . The compacting frame 31 is horizontally arranged at the upper end of the front end of the support frame 1 and extends horizontally outward. The compacting roller 32 is horizontally rotatably connected to the compacting frame 31 .

[0026] like Figure 3 As shown, the cutting mechanism 4 is arranged on the compacting frame 31 and is used to cut the felt glue. The cutting mechanism 4 includes a slider 41, a support block 42, a blade 43 and a handle 44.

[0027] like Figure 3As shown, the slider 41 is slidably connected to the compacting frame 31 in a transverse direction, the support block 42 is rotatably connected to the slider 41 , and a torsion spring 45 is provided at the rotation position, the blade 43 is provided above the support block 42 , and the handle 44 is provided on the back side of the support block 42 .

[0028] like Figure 2 As shown, the felt rubber roller 5 is horizontally rotatably connected to the rear end of the support frame 1 and is used for winding the felt rubber. A discharge port 12 located between the rubber squeezing mechanism 2 and the compacting mechanism 3 is provided at the front end of the support frame 1. Clamps 13 are provided in the discharge port 12 for clamping the upper and lower sides of the felt rubber to achieve the smoothing operation of the felt rubber and ensure the flat laying of the felt rubber.

[0029] When it is necessary to lay felt glue at the repair location, hold the handle 44 on the support frame 1 so that the glue squeezing mechanism 2 at the front end of the support frame 1 contacts the outer wall, and then control the support frame 1 to move 1-2 cm from top to bottom, at which time the glue squeezing mechanism 2 applies glue on the outer wall.

[0030] The felt glue is then pulled out on the felt glue roller 5, passed through the discharge port 12 and laid on the outer wall coated with glue, and then the support frame 1 is continued to be controlled to move downward. At this time, the glue squeezing mechanism 2 always squeezes the glue out and applies it on the outer wall, and because the end position of the felt glue is bonded and fixed, the felt glue is automatically unwound during the movement of the support frame 1, so that the felt glue is laid on the outer wall.

[0031] Then, during the movement of the support frame 1, the compaction roller 32 firmly presses the felt glue to the outer wall to achieve stable laying of the felt glue. Then, the handle 44 is controlled to drive the support block 42 to flip, and the support block 42 drives the blade 43 to move synchronously until the blade 43 hits the felt glue. Then, the support block 42 is controlled to drive the slider 41 to slide horizontally to achieve automatic cutting of the felt glue, so as to facilitate laying of the next piece of felt glue.

[0032] like Figure 2 , Figure 4 , Figure 5 As shown, the glue extrusion mechanism 2 includes a glue injection nozzle 21, a glue injection tube 22, a cover 23 and a glue brush 24. The glue injection nozzle 21 is arranged below the front end of the support frame 1, and the glue injection tube 22 is connected to the glue injection nozzle 21 and is horizontally arranged in the support frame 1. The cover 23 is connected to the glue injection nozzle 21 and is arranged in a long strip shape. The glue brush 24 is rotatably connected in the cover 23 and penetrates the cover 23, and a plurality of circles of glue outlet grooves 25 are evenly arranged on the glue brush 24.

[0033] When the glue squeezing mechanism 2 is working, the glue in the glue injection tube 22 can enter the cover shell 23, and the glue brush 24 contacts the outer wall. During the rotation of the glue brush 24, the glue brush 24 can apply a part of the glue on the outer wall, and the other part of the glue overflows along the glue outlet groove 25 on the outer wall to form strips of glue, so that the felt glue is firmly bonded and fixed to the outer wall, realizing the stable laying of the felt glue.

[0034] like Figure 2 , Figure 4 , Figure 5 As shown, the injection tube 22 is provided with an inserting tube 6 for inserting the injection nozzle 21, the outer wall of the inserting tube 6 is provided with a clamping ring 61, and the inner wall of the injection nozzle 21 is provided with a clamping groove 62 for the clamping ring 61 to be inserted. Therefore, by providing a detachably connected injection tube 22, the injection tube 22 can be quickly disassembled and replaced after use, which is convenient for continuous operation.

[0035] like Figure 2 , Figure 4 , Figure 5 As shown, a piston plate 7 is horizontally slidably connected in the glue injection tube 22 , a rack 71 slidably connected to the support frame 1 is horizontally arranged on the piston plate 7 , and a gear 72 meshing with the rack 71 is arranged on the felt rubber roller 5 .

[0036] When the felt rubber is laid, as the felt rubber is unwound, the felt rubber 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, realizing a stable glue extrusion operation.

[0037] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the 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 board of an existing building, characterized in that: The steps include: S1, base construction, drilling holes in the external wall insulation boards that are detected to have hollows and cracks, and pressurized grouting in the holes. If there is a partial detachment of the external wall insulation board, the defective position is cleaned, and then the new insulation board is bonded to the repair position with glue to fill the defective position, and the surface of the new insulation board is made flush with the original insulation board, and the interface leveling material is used for leveling; S2, inner layer felt construction, using a felt glue laying machine to lay a layer of felt glue on the leveling layer, and make the felt glue cover the joint position between the original outer facing and the leveling layer; S3, waterproof and anti-cracking felt construction, apply a layer of glue on the laid inner layer of felt, and then bond and fix the waterproof and anti-cracking felt; S4, fixing pin construction, drilling holes on the exterior wall insulation board, so that the drilled holes are penetrated into the original concrete layer, and then installing fixing pins, using the fixing pins to compress and fix the waterproof anti-cracking felt to achieve reinforcement of the repair position; S5, outer layer felt construction, using a felt glue laying machine to lay a layer of felt glue on the waterproof and anti-cracking felt, and make the felt glue cover all the fixing pins; S6, exterior finishing construction, mix the paint according to the original exterior finishing color, and apply the paint evenly on the outer felt surface.

2. The in-situ repair and reinforcement method of the exterior wall insulation board of an existing building according to claim 1 is characterized by: The felt glue laying machine comprises: The support frame (1) is in the form of a rectangular frame, and has handles (11) on both sides; A glue squeezing mechanism (2) is arranged at the lower end of the support frame (1) and is used for applying glue; A compacting mechanism (3), comprising a compacting frame (31) and a compacting roller (32), wherein the compacting frame (31) is horizontally arranged at the upper end of the front end of the support frame (1) and is horizontally extended outward, and the compacting roller (32) is horizontally rotatably connected to the compacting frame (31); A cutting mechanism (4) is arranged on the compacting frame (31) and is used to cut the felt glue; A felt rubber roller (5) is horizontally rotatably connected to the rear end of the support frame (1) and is provided for the felt rubber to be wound around. A discharge port (12) located between the rubber squeezing mechanism (2) and the compacting mechanism (3) is provided at the front end of the support frame (1).

3. The in-situ repair and reinforcement method of the exterior wall insulation board of an existing building according to claim 2 is characterized by: The glue extrusion mechanism (2) comprises a glue injection nozzle (21), a glue injection tube (22), a cover shell (23) and a glue brush (24); the glue injection nozzle (21) is arranged below the front end of the support frame (1); the glue injection tube (22) is connected to the glue injection nozzle (21) and is horizontally arranged in the support frame (1); the cover shell (23) is connected to the glue injection nozzle (21) and is arranged in a long strip shape; the glue brush (24) is rotatably connected to the cover shell (23) and passes through the cover shell (23); and a plurality of circles of glue outlet grooves (25) are evenly arranged on the glue brush (24).

4. The in-situ repair and reinforcement method of the exterior wall insulation board of an existing building according to claim 3 is characterized by: The glue injection tube (22) is provided with an insertion tube (6) plugged into the glue injection nozzle (21), the outer wall of the insertion tube (6) is provided with a clamping ring (61), and the inner wall of the glue injection nozzle (21) is provided with a clamping groove (62) for the clamping ring (61) to be embedded.

5. The in-situ repair and reinforcement method of the exterior wall insulation board of an existing building according to claim 4 is characterized by: A piston plate (7) is horizontally slidably connected inside the rubber injection tube (22), a rack (71) slidably connected to the support frame (1) is horizontally arranged on the piston plate (7), and a gear (72) meshing with the rack (71) is arranged on the felt rubber roller (5).

6. The in-situ repair and reinforcement method of the exterior wall insulation board of an existing building according to claim 2 is characterized by: The cutting mechanism (4) comprises a slider (41), a support block (42), a blade (43) and a handle (44); the slider (41) is slidably connected to the compacting frame (31) in a transverse manner; the support block (42) is rotatably connected to the slider (41), and a torsion spring (45) is provided at the rotation position; the blade (43) is provided above the support block (42); and the handle (44) is provided on the back side of the support block (42).

7. The in-situ repair and reinforcement method for the exterior wall insulation board of an existing building according to claim 2 is characterized by: The discharge port (12) is provided with clamping plates (13) for clamping the felt glue at the upper and lower sides.

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