Outer wall reinforcing and heat preservation construction structure and technology suitable for old and modified building

Abstract

The invention belongs to the technical field of building construction, and discloses an outer wall reinforcing and heat preservation construction structure and process suitable for old and modified buildings, the outer wall reinforcing and heat preservation construction structure comprises an outer wall body, and further comprises a reinforcing mesh fixed to the outer wall of the outer wall body through expansion bolts; the reinforcing layer is arranged on the outer wall of the reinforcing mesh; the insulation board is arranged on the outer wall of the reinforcing layer through a reinforcing mechanism; the connecting mechanism is arranged on the inner wall of the insulation board; the facing layer is arranged on the outer wall of the insulation board; wherein the reinforcing mechanism comprises a fixed cylinder, and the inner wall of the fixed cylinder is slidably connected with a moving block; on the premise that the original structure is not damaged, the strength of the wall is effectively enhanced, the defect of insufficient heat preservation of sprayed paint is overcome, the facing layer gives consideration to attractiveness and cost, the overall construction process is simple and convenient, the construction period is short, economic benefits are good, and an efficient, economical and practical solution is provided for old building transformation.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and in particular relates to a construction structure and process suitable for exterior wall reinforcement and thermal insulation of old and renovated buildings. Background Art

[0002] The renovation of the exterior walls of old buildings includes but is not limited to wall demolition and reconstruction, reinforced concrete reinforcement, exterior wall facade spraying, tiling and hanging insulation boards, but all of the above technologies have limitations: although wall demolition and reconstruction can completely solve the problem of old exterior walls, it will seriously damage the original structure of the wall, and the construction period is long, and the overall process cost is high; although reinforced concrete reinforcement has a significant reinforcement effect, it will greatly change the architectural style, and the construction volume is large and the economy is poor; exterior wall facade spraying is convenient to construct, but the insulation effect is limited by the material and thickness; tiling has good thermal insulation performance, but is limited by high labor and transportation costs; although hanging insulation boards have excellent thermal insulation performance, they cannot play a reinforcement role on the exterior wall. These shortcomings make it difficult for existing exterior wall renovation technologies of old buildings to fully meet actual needs.

[0003] Therefore, in response to the above problems, a construction structure and process for exterior wall reinforcement and insulation suitable for old renovation buildings are proposed. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides an exterior wall reinforcement and insulation construction structure and process suitable for old building renovation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an exterior wall reinforcement and insulation construction structure suitable for old building renovation, comprising an exterior wall body and further comprising: A steel mesh, the steel mesh being fixed to the outer wall of the outer wall by expansion bolts; A reinforcement layer, the reinforcement layer being arranged on the outer wall of the steel mesh; A heat-insulating plate, the heat-insulating plate being arranged on the outer wall of the reinforcement layer through a reinforcement mechanism; A connecting mechanism, the connecting mechanism being arranged on the inner wall of the insulation board; A finishing layer, the finishing layer being provided on the outer wall of the insulation board; Wherein, the reinforcement mechanism includes a fixed cylinder, the inner wall of the fixed cylinder is slidably connected to a moving block, and the inner wall of the fixed cylinder is rotatably connected to a rotating block; The connecting mechanism comprises a connecting block, an inner wall of the connecting block is slidably connected to a shift block, and an inner wall of the connecting block is slidably connected to a slider.

[0006] Preferably, the moving block is elastically connected to the inner wall of the fixed cylinder through a return spring, the outer wall of the moving block is provided with a groove, the outer wall of the bottom end of the moving block is fixedly connected with an abutment block, the outer wall of the rotating block is fixedly connected with a square plate, the inner wall of the rotating block is provided with an arc groove, the outer wall of the moving block is fixedly connected with a protrusion, the inner wall of the fixed cylinder is elastically connected with a wedge block through an elastic member A, the outer wall of the insulation plate is provided with a square groove, and the inner wall of the insulation plate is provided with a circular groove.

[0007] Preferably, the fixed cylinder is fixedly connected to the outer wall of the reinforcement layer, one end of the return spring is fixedly connected to the inner wall of the fixed cylinder, and the other end of the return spring is fixedly connected to the outer wall of the moving block.

[0008] Preferably, the outer wall of the moving block contacts the inner wall of the rotating block, the protrusion contacts the inner wall of the arc groove, the square plate contacts the inner wall of the circular groove, and the abutment block penetrates the outer wall of the bottom end of the fixed cylinder.

[0009] Preferably, one end of the elastic member A is fixedly connected to the outer wall of the wedge block, the other end of the elastic member A is fixedly connected to the inner wall of the fixed cylinder, the wedge block is slidingly connected to the inner wall of the fixed cylinder, and the wedge block is clamped in the groove.

[0010] Preferably, the slider is hinged to the outer wall of the shift block through a hinge rod, a clamping groove is provided on the outer wall of the slider, and the inner wall of the insulation board is elastically connected to the triangular block through an elastic member B.

[0011] Preferably, the connecting block contacts the outer wall of the insulation board, and the sliding block contacts the inner wall of the insulation board.

[0012] Preferably, one end of the hinged rod is hinged to the outer wall of the shift block, the other end of the hinged rod is hinged to the outer wall of the slider, and the shift block passes through the outer wall of the connecting block.

[0013] Preferably, one end of the elastic member B is fixedly connected to the outer wall of the triangular block, the other end of the elastic member B is fixedly connected to the inner wall of the insulation board, the triangular block is slidingly connected to the inner wall of the insulation board, and the triangular block is snap-fitted to the snap-fit groove.

[0014] This application also proposes a construction process for exterior wall reinforcement and insulation applicable to old building renovation, comprising the following steps: S1. Use a cleaning machine to remove stains and impurities from the exterior wall, use a chiseling machine to treat the interface of the concrete base, and use pressure grouting to repair the hollow areas of the exterior wall to ensure that the base is firm and flat; S2. Fix the steel mesh on the exterior wall using L-shaped angle steel connectors. After completion, further reinforce the steel mesh with expansion bolts. S3. Use mechanical spraying to spray polymer mortar twice on the outside of the steel mesh. Immediately after spraying, use a spatula to smooth it to form a rough texture to enhance the bonding strength with the insulation board. After the mortar solidifies, a reinforcement layer is formed. The reinforcement mechanism is installed with bolts. S4. Apply adhesive to the outside of the reinforcement layer and apply special waterproof sealant to the side of the insulation board to prevent water vapor penetration. Then bond the insulation board to the outside of the reinforcement layer, reinforce it with the reinforcement mechanism, and then install the connection mechanism to ensure that the surfaces of the two sets of insulation boards are flush; S5. Spray penetrating sealing primer on the surface of the insulation board, add elastic emulsion to the middle coat to improve crack resistance, use fluorocarbon paint for topcoat, and cover with nano self-cleaning coating after construction. You can also use tile adhesive to stick tiles to ensure that the tiles fit tightly with the insulation layer to form a finishing layer to complete the construction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The reinforcement layer of the present invention uses a combination of steel mesh and polymer mortar, effectively enhancing the wall strength without damaging the original structure. The insulation layer uses high-performance insulation boards combined with adhesives to compensate for the lack of insulation in spray paint and significantly improve thermal insulation performance. The finishing layer can flexibly use paint or tiles, taking into account both aesthetics and cost, reducing labor and transportation costs. The overall construction process is simple, the construction period is short, and the economic benefits are good, providing an efficient, economical and practical solution for the renovation of old buildings. The present invention provides a reinforcing mechanism. When the insulation board is installed outside the reinforcing layer, the abutment block is pushed to rotate the square board ninety degrees in the circular groove, and the square board is vertically intersected with the square groove, thereby fixing the insulation board to the reinforcing mechanism. This further improves the fixing effect of the insulation board and avoids the problem of the insulation board loosening and falling off due to the reduced bonding effect of the adhesive. The present invention is provided with a connecting mechanism. After the two groups of insulation boards are fixed, the connecting block can be placed and the shifting block can be moved. The two groups of insulation boards can be further fixed by clamping the triangular block with the square groove on the slider. The connecting mechanism can also ensure that the surfaces of the two groups of insulation boards are flush to prevent unevenness from affecting the construction effect of the subsequent finishing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the exterior wall, steel mesh, reinforcement layer, insulation board, and finishing layer of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the thermal insulation board of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the insulation board and reinforcement mechanism of the present invention; Figure 5 For the present invention Figure 4A schematic diagram of the enlarged structure of part A; Figure 6 This is a schematic diagram of the exploded structure of the fixed cylinder, moving block, and rotating block of the present invention; Figure 7 This is a schematic diagram of the exploded cross-section structure of the insulation board and the connecting block of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B in the middle; In the figure: 1. outer wall; 2. steel mesh; 3. reinforcement layer; 4. reinforcement mechanism; 401. fixed cylinder; 402. rotating block; 403. square plate; 404. elastic part A; 405. wedge block; 406. return spring; 407. moving block; 408. groove; 409. abutment block; 410. square groove; 411. circular groove; 412. arc groove; 413. protrusion; 5. insulation board; 6. connecting mechanism; 601. connecting block; 602. dial block; 603. hinge rod; 604. slider; 605. snap-in groove; 606. elastic part B; 607. triangular block; 7. finishing layer. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figures 1 to 8 As shown, the present invention provides an exterior wall reinforcement and insulation construction structure suitable for old building renovation, including an exterior wall 1 and further comprising: The steel mesh 2 is fixed to the outer wall of the outer wall 1 by expansion bolts; A reinforcement layer 3 is provided on the outer wall of the steel mesh 2; The insulation board 5 is arranged on the outer wall of the reinforcement layer 3 through the reinforcement mechanism 4; The connecting mechanism 6 is provided on the inner wall of the insulation board 5; A finishing layer 7, which is provided on the outer wall of the insulation board 5; The reinforcement mechanism 4 includes a fixed cylinder 401, the inner wall of which is slidably connected to a moving block 407, and the inner wall of which is rotatably connected to a rotating block 402; The connecting mechanism 6 includes a connecting block 601 , an inner wall of which is slidably connected to a shift block 602 , and an inner wall of which is slidably connected to a slider 604 .

[0019] The above scheme is adopted: the outer wall 1 is the wall to be reinforced and insulated, the steel mesh 2 can be fixed to the surface of the outer wall 1 by expansion bolts, the reinforcement layer 3 is mainly composed of polymer mortar, which can be sprayed on the steel mesh 2 to achieve a reinforcement effect, and when the reinforcement layer 3 is cured, the reinforcement mechanism 4 can be fixed to its surface by bolts, and an adhesive is applied to its surface to fix the insulation board 5. The reinforcement mechanism 4 can further fix the insulation board 5 to prevent the adhesive effect from being reduced and affecting the fixing effect of the insulation board 5, ensuring that the insulation board 5 is firmly fixed to the outside of the outer wall 1; after the insulation board 5 is fixed, the left and right groups of insulation boards 5 can be connected by a connecting mechanism 6, so that the two groups of insulation boards 5 remain flush and further improve stability, and then paint can be applied to the surface of the insulation board 5 or tiles can be pasted to form a finishing layer 7 to complete the reinforcement and insulation improvement of the outer wall 1.

[0020] like Figures 2 to 6 As shown, the moving block 407 is elastically connected to the inner wall of the fixed cylinder 401 through the return spring 406, the outer wall of the moving block 407 is provided with a groove 408, the outer wall of the bottom end of the moving block 407 is fixedly connected with the abutment block 409, the outer wall of the rotating block 402 is fixedly connected with the square plate 403, the inner wall of the rotating block 402 is provided with an arc groove 412, the outer wall of the moving block 407 is fixedly connected with a protrusion 413, the inner wall of the fixed cylinder 401 is elastically connected with the wedge block 405 through the elastic member A404, the outer wall of the insulation board 5 is provided with a square groove 410, and the inner wall of the insulation board 5 is provided with a circular groove 411.

[0021] The above solution is adopted: the square plate 403 in the reinforcing mechanism 4 can be inserted into the circular groove 411, and can be rotated 90 degrees during the insertion process and stuck in the circular groove 411, so that the insulation board 5 will not be separated from the reinforcing mechanism 4; the square groove 410 is adapted to the size of the square plate 403, and the circular groove 411 is connected to the square groove 410, the square plate 403 is first inserted into the square groove 410, and then enters the circular groove 411 and rotates for reinforcement; the abutment block 409 can be fixed on the cylinder 4 01 and drives the moving block 407 to move synchronously. When installing the insulation board 5, the square groove 410 of the insulation board 5 can be aligned with the square board 403, and the insulation board 5 can be pushed toward the reinforcement layer 3. The outer wall of the insulation board 5 will generate a thrust on the abutment block 409 to drive the moving block 407 to move synchronously. The moving block 407 can drive the rotating block 402 to rotate, so that the square board 403 is rotated ninety degrees and stuck in the circular groove 411, thereby reinforcing the insulation board 5.

[0022] like Figures 2 to 6As shown, the fixed cylinder 401 is fixedly connected to the outer wall of the reinforcement layer 3, one end of the return spring 406 is fixedly connected to the inner wall of the fixed cylinder 401, and the other end of the return spring 406 is fixedly connected to the outer wall of the moving block 407; the outer wall of the moving block 407 contacts the inner wall of the rotating block 402, the protrusion 413 contacts the inner wall of the arc groove 412, the square plate 403 contacts the inner wall of the circular groove 411, and the abutment block 409 passes through the outer wall of the bottom end of the fixed cylinder 401; one end of the elastic member A404 is fixedly connected to the outer wall of the wedge block 405, and the other end of the elastic member A404 is fixedly connected to the inner wall of the fixed cylinder 401, the wedge block 405 is slidably connected to the inner wall of the fixed cylinder 401, and the wedge block 405 is clamped in the groove 408.

[0023] The above solution is adopted: under normal conditions, the return spring 406 keeps the moving block 407 in a certain position and fixed due to its own elastic force. At this time, the protrusion 413 contacts the arc groove 412 on the right side. After the insulation board 5 moves to the square plate 403 and inserts into the square groove 410, it continues to push the insulation board 5, and its outer wall pushes the abutment block 409 and the moving block 407 to move to the left. At this time, the square plate 403 is in the circular groove 411, and the moving block 407 moves synchronously with the protrusion 413. The protrusion 413 squeezes the inner wall of the arc groove 412 and moves along the inner wall of the arc groove 412, which can drive the rotating block 402 to rotate synchronously, so that the square plate 403 By rotating ninety degrees, it is in a vertical state inside the circular groove 411, so that the reinforcement mechanism 4 cannot lose contact with the insulation board 5, and the reinforcement is completed; and while the movable block 407 moves, its outer wall will squeeze the arc surface of the wedge block 405, so that the two groups of wedge blocks 405 move toward the inner wall of the fixed cylinder 401 at the same time, squeezing the elastic member A404. When the movable block 407 moves to the groove 408 corresponding to the position of the wedge block 405, the elastic member A404 causes the wedge block 405 to pop out due to its own elastic force, and engages with the groove 408, limiting the movable block 407, and ensuring the reinforcement effect of the reinforcement mechanism 4 on the insulation board 5.

[0024] like Figures 7 and 8 As shown, the slider 604 is hinged to the outer wall of the shift block 602 through the hinge rod 603, the outer wall of the slider 604 is provided with a snap-in groove 605, and the inner wall of the insulation board 5 is elastically connected to the triangular block 607 through the elastic member B606.

[0025] The above scheme is adopted: after the left and right groups of insulation boards 5 are fixed, the connecting block 601 can be placed between the two groups of insulation boards 5. When placing them in, the dial block 602 can be pushed to both sides so that the sliders 604 are both in the inner wall of the connecting block 601. After the connecting block 601 is turned into the insulation board 5, the dial block 602 can be pushed toward the middle so that the sliders 604 move up and down to the inner wall of the insulation board 5, and are snapped into the snap-in groove 605 through the triangular block 607 to complete the connection between the two groups of insulation boards 5. The connecting mechanism 6 can ensure that the two groups of insulation boards 5 are in the same plane, and the flat surface can better paste tiles or apply coating materials to form a finishing layer 7; the outer surface of the connecting block 601 is flush with the outer surface of the dial block 602, and after the connecting block 601 is placed in the insulation board 5, its surface is flush with the surface of the insulation board 5, so that unevenness will not affect the setting of the finishing layer 7.

[0026] like Figures 7 and 8 As shown, the connecting block 601 contacts the outer wall of the insulation board 5, and the slider 604 contacts the inner wall of the insulation board 5; one end of the hinged rod 603 is hinged to the outer wall of the shift block 602, and the other end of the hinged rod 603 is hinged to the outer wall of the slider 604, and the shift block 602 passes through the outer wall of the connecting block 601; one end of the elastic member B606 is fixedly connected to the outer wall of the triangular block 607, and the other end of the elastic member B606 is fixedly connected to the inner wall of the insulation board 5, the triangular block 607 is slidably connected to the inner wall of the insulation board 5, and the triangular block 607 is snap-fitted to the snap-fit groove 605.

[0027] The above solution is adopted: when the shift block 602 is moved, the hinge rod 603 is driven to flip, and the hinge rod 603 is always in an inclined state. When the shift block 602 moves to both sides of the connecting block 601, the hinge rod 603 is flipped toward the middle, driving the upper and lower sliders 604 to move toward the middle. When the shift block 602 moves toward the middle of the connecting block 601, the hinge rod 603 is flipped to both sides, driving the upper and lower sliders 604 to move in the up-down direction and insert into the insulation board 5. In the normal state, the triangular block 607 is in a state of being tilted due to the elastic member B. The elastic force of 606 always keeps it in a pop-up state. When the slider 604 moves, it will squeeze the inclined surface of the triangular block 607, causing it to move to the inner wall of the insulation board 5 and compress the elastic part B606. When the slider 604 moves to the position corresponding to the snap-in groove 605 and the triangular block 607, the elastic part B606 will cause the triangular block 607 to pop out and snap into the snap-in groove 605 due to the elastic force, completing the fixation of the slider 604, thereby fixing the connecting block 601, and connecting and fixing the two groups of insulation boards 5 through the connecting block 601.

[0028] This application also proposes a construction process for exterior wall reinforcement and insulation applicable to old building renovation, comprising the following steps: S1. Use a cleaning machine to remove stains and impurities from the exterior wall 1, use a chiseling machine to perform interface treatment on the concrete base, and use pressure grouting to repair the hollow areas of the exterior wall 1 to ensure that the base is firm and flat; S2. Fix the steel mesh 2 on the outer wall 1 through the L-shaped angle steel connector. After completion, further reinforce the steel mesh 2 with expansion bolts; S3. Use mechanical spraying to spray polymer mortar twice on the outside of the steel mesh 2. Immediately after spraying, use a spatula to smooth it to form a rough texture to enhance the adhesion with the insulation board 5. After the mortar cures, a reinforcement layer 3 is formed. The reinforcement mechanism 4 is installed with bolts. S4. Apply adhesive to the outside of the reinforcement layer 3 and apply special waterproof sealant to the sides of the insulation board to prevent water vapor penetration. Then bond the insulation board 5 to the outside of the reinforcement layer 3, reinforce it with the reinforcement mechanism 4, and then install the connecting mechanism 6 to ensure that the surfaces of the two groups of insulation boards 5 are flush; S5. Spray penetrating sealing primer on the surface of the insulation board 5, add elastic emulsion to the middle coat to improve crack resistance, use fluorocarbon paint for topcoat, and cover with nano self-cleaning coating after construction. You can also use tile adhesive to stick tiles to ensure that the tiles fit tightly with the insulation layer to form a finishing layer 7 to complete the construction.

[0029] The working principle and use process of the present invention: The surface of the exterior wall 1 to be reinforced and insulated is cleaned to remove loose and peeling parts to ensure that the surface is flat and clean. The steel mesh 2 is fixed to the outer wall of the exterior wall 1 using expansion bolts. A reinforcement layer 3 composed of polymer mortar is sprayed on the surface of the steel mesh 2. The exterior wall 1 is reinforced by combining the mortar and the steel mesh. Wait for the reinforcement layer 3 to solidify to ensure that it meets the design strength requirements.

[0030] Fix the fixing cylinder 401 to the outer wall of the reinforcement layer 3 by bolts, and apply adhesive on the surface of the reinforcement layer 3, align the square groove 410 of the insulation board 5 with the square plate 403 of the reinforcement mechanism 4, push the insulation board 5 toward the reinforcement layer 3, and the insulation board 5 pushes the abutment block 409 to drive the moving block 407 to move to the left. The protrusion 413 moves along the inner wall of the arc groove 412, driving the rotating block 402 to rotate, so that the square plate 403 rotates ninety degrees and is stuck in the circular groove 411. The moving block 407 squeezes the wedge block 405 during its movement. When the groove 408 corresponds to the position of the wedge block 405, the elastic member A404 pushes the wedge block 405 to pop out and engage with the groove 408, limiting the moving block 407 and completing the reinforcement of the insulation board 5. After the left and right groups of insulation boards 5 are fixed, the shifting block 602 of the connecting mechanism 6 is moved to both sides so that the slider 604 is located in the inner wall of the connecting block 601. The connecting block 601 is placed between the two groups of insulation boards 5. The shifting block 602 is then shifted toward the middle. The hinged rod 603 flips and drives the slider 604 to move up and down and insert into the inner wall of the insulation board 5. When the slider 604 moves, it squeezes the triangular block 607. When the snap-in groove 605 corresponds to the position of the triangular block 607, the elastic part B606 pushes the triangular block 607 to pop out and snap into the snap-in groove 605, fixing the connecting block 601, connecting the two groups of insulation boards 5, and ensuring that the surfaces of the two groups of insulation boards 5 are flush; finally, paint is applied or tiles are pasted on the surface of the insulation board 5 to form a finishing layer 7, completing the reinforcement and insulation improvement of the exterior wall 1.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An exterior wall reinforcement and insulation construction structure suitable for old building renovation, comprising an exterior wall (1), characterized in that: Also includes: A steel mesh (2), the steel mesh (2) being fixed to the outer wall of the outer wall (1) via expansion bolts; A reinforcement layer (3), the reinforcement layer (3) being arranged on the outer wall of the steel mesh (2); A heat-insulating plate (5), the heat-insulating plate (5) being arranged on the outer wall of the reinforcement layer (3) via a reinforcement mechanism (4); A connecting mechanism (6), the connecting mechanism (6) being arranged on the inner wall of the insulation board (5); A finishing layer (7), the finishing layer (7) being arranged on the outer wall of the insulation board (5); The reinforcement mechanism (4) comprises a fixed cylinder (401), the inner wall of the fixed cylinder (401) is slidably connected to a moving block (407), and the inner wall of the fixed cylinder (401) is rotatably connected to a rotating block (402); The connecting mechanism (6) comprises a connecting block (601), the inner wall of the connecting block (601) is slidably connected to a shifting block (602), and the inner wall of the connecting block (601) is slidably connected to a sliding block (604).

2. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 1 is characterized by: The movable block (407) is elastically connected to the inner wall of the fixed cylinder (401) via a return spring (406); a groove (408) is provided on the outer wall of the movable block (407); an abutment block (409) is fixedly connected to the outer wall of the bottom end of the movable block (407); the outer wall of the rotating block (402) is fixedly connected to the square plate (403); an arc-shaped groove (412) is provided on the inner wall of the rotating block (402); a protrusion (413) is fixedly connected to the outer wall of the movable block (407); the inner wall of the fixed cylinder (401) is elastically connected to the wedge block (405) via an elastic member A (404); a square groove (410) is provided on the outer wall of the heat-insulating plate (5); and a circular groove (411) is provided on the inner wall of the heat-insulating plate (5).

3. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 2 is characterized by: The fixed cylinder (401) is fixedly connected to the outer wall of the reinforcement layer (3), one end of the return spring (406) is fixedly connected to the inner wall of the fixed cylinder (401), and the other end of the return spring (406) is fixedly connected to the outer wall of the moving block (407).

4. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 2 is characterized by: The outer wall of the movable block (407) contacts the inner wall of the rotating block (402), the protrusion (413) contacts the inner wall of the arc groove (412), the square plate (403) contacts the inner wall of the circular groove (411), and the abutment block (409) penetrates the outer wall of the bottom end of the fixed cylinder (401).

5. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 2 is characterized by: One end of the elastic member A (404) is fixedly connected to the outer wall of the wedge block (405), and the other end of the elastic member A (404) is fixedly connected to the inner wall of the fixed cylinder (401). The wedge block (405) is slidably connected to the inner wall of the fixed cylinder (401), and the wedge block (405) is clamped to the groove (408).

6. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 1 is characterized by: The slider (604) is hinged to the outer wall of the shift block (602) via a hinge rod (603); a clamping groove (605) is provided on the outer wall of the slider (604); and the inner wall of the insulation board (5) is elastically connected to a triangular block (607) via an elastic member B (606).

7. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 6 is characterized by: The connecting block (601) contacts the outer wall of the thermal insulation board (5), and the sliding block (604) contacts the inner wall of the thermal insulation board (5).

8. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 6 is characterized by: One end of the hinged rod (603) is hinged to the outer wall of the shift block (602), and the other end of the hinged rod (603) is hinged to the outer wall of the slider (604). The shift block (602) passes through the outer wall of the connecting block (601).

9. The exterior wall reinforcement and insulation construction structure suitable for old building renovation according to claim 6 is characterized by: One end of the elastic member B (606) is fixedly connected to the outer wall of the triangular block (607), the other end of the elastic member B (606) is fixedly connected to the inner wall of the thermal insulation board (5), the triangular block (607) is slidably connected to the inner wall of the thermal insulation board (5), and the triangular block (607) is snap-fitted to the snap-fit groove (605).

10. A construction process for exterior wall reinforcement and insulation applicable to old building renovation, applied to the exterior wall reinforcement and insulation construction structure applicable to old building renovation as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Use a cleaning machine to remove stains and impurities from the exterior wall (1), use a chiseling machine to perform interface treatment on the concrete base, and use pressure grouting to repair the hollow parts of the exterior wall (1) to ensure that the base is firm and flat; S2, fixing the steel mesh (2) on the outer wall (1) through L-shaped angle steel connectors, and after completion, further reinforcing the steel mesh (2) through expansion bolts; S3, using a mechanical spraying method, spraying polymer mortar twice on the outside of the steel mesh (2), and immediately pressing it with a spatula after spraying to form a rough texture to enhance the bonding strength with the insulation board (5), forming a reinforcement layer (3) after the mortar solidifies, and installing the reinforcement mechanism (4) by bolts; S4, apply adhesive to the outside of the reinforcement layer (3), apply special waterproof sealant to the side of the insulation board to prevent water vapor penetration, then bond the insulation board (5) to the outside of the reinforcement layer (3), reinforce it through the reinforcement mechanism (4), and then install the connection mechanism (6) to ensure that the surfaces of the two sets of insulation boards (5) are flush; S5. Spray a penetrating sealing primer on the surface of the insulation board (5), add elastic emulsion to the mid-coat to improve crack resistance, and use fluorocarbon paint as the topcoat. After the construction is completed, cover it with a nano self-cleaning coating. You can also use tile adhesive to stick the tiles to ensure that the tiles fit tightly with the insulation layer to form a finishing layer (7) to complete the construction.

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