Construction method for installing waterproof sleeve on outer wall body through rear opening

Abstract

The application discloses a construction method for installing waterproof sleeve pipes through back hole opening of outer walls, and the waterproof sleeve pipes are pushed into the fastening devices installed through back hole opening of the outer walls, the sealing gaskets are tightly connected with the waterproof sleeve pipes and the walls, the sealing property is realized, misoperation is effectively avoided, and the sleeve pipe installation efficiency is improved. The fastening devices installed through back hole opening of the outer walls are self-made, can be repeatedly used, have low manufacturing cost, are simple to operate, are convenient to disassemble, can effectively guarantee work quality, and have obtained certain economic benefits through experiments. The construction method for installing waterproof sleeve pipes through back hole opening of outer walls provides a new solution for mechanical and electrical construction personnel when encountering the back hole opening of the walls, and avoids the problem that the waterproof sleeve pipes cannot be pre-buried through hole opening of the outer wall surfaces because the walls have been constructed and no hole is reserved for mechanical and electrical installation.

Description

Technical Field

[0001] This invention relates to the field of building electromechanical construction management technology, specifically a construction method for installing waterproof sleeves by opening holes in the exterior wall. Background Technology

[0002] Wall sleeves, also known as waterproof sleeves, wall-penetrating pipes, or wall-embedded pipes, are generally divided into rigid waterproof sleeves and flexible waterproof sleeves. The main difference is that rigid waterproof sleeves are typically used in basements where pipes need to pass through, while flexible waterproof sleeves are generally used in places with higher requirements, such as air-raid shelter walls and water tanks. Rigid wall sleeves have an external wing ring on the steel pipe, while flexible wall sleeves, in addition to the wing ring, have an internal retaining ring and internally threaded flange. They can be custom-made or purchased as complete sets.

[0003] During actual on-site construction, due to changes in electromechanical and other supporting equipment or pipelines, or because the civil engineering unit forgot to reserve pipe holes, it is necessary to break through and create secondary openings in the existing walls. The main disadvantage of creating secondary openings in thick walls is the potential for water seepage and leakage. Ensuring the safe and orderly implementation of the opening work and the installation of waterproof sleeves, as well as resolving water seepage and leakage issues, are crucial aspects of this construction process. To ensure the smooth progress of the drilling and waterproof sleeve installation work, it is necessary to select reasonable and effective construction methods and take safe and feasible protective measures. Summary of the Invention

[0004] This invention proposes a construction method for installing waterproof sleeves by opening holes in the exterior wall after the wall has been opened, which takes safe and feasible protective measures to ensure the smooth progress of the perforation and waterproof sleeve installation work.

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

[0006] A construction method for installing a waterproof sleeve by opening a hole in the exterior wall after construction, the steps of which are as follows:

[0007] S1: Prepare tools before construction;

[0008] S2: Positioning and layout;

[0009] S3: Measure and adjust the perpendicularity of the waterproof sleeve to the wall and the horizontal angle of the waterproof sleeve;

[0010] S4: Milling holes;

[0011] S5: Roughening treatment of the inner surface of the hole;

[0012] S6: Define one side of the wall as the outdoor side and the other side as the indoor side. Hoist the waterproof sleeve to the installation height. On the outdoor side, install the rubber pad and the ring steel plate on the waterproof sleeve in sequence. Then, pass it through the opening in the wall and enter the indoor side. Fix the ring steel plate on the outdoor side to the waterproof sleeve by full welding. Pour concrete between the waterproof sleeve and the opening on the indoor side to fill it.

[0013] S7: After the concrete has dried completely, install rubber pads, ring steel plates and fastening devices in sequence on the waterproof sleeve on the indoor side. Use the fastening devices to tightly fit the rubber pads and ring steel plates on the waterproof sleeve to the waterproof sleeve and the indoor wall. Then spot weld the ring steel plate on the indoor side to the waterproof sleeve. After removing the fastening devices, fully weld the ring steel plate to the waterproof sleeve on the indoor side.

[0014] S8: Waterproofing treatment;

[0015] S9: Apply waterproof membrane or waterproof coating: For the exterior wall, which is the water-facing side, apply two coats of SBS waterproof membrane, extending 500mm-550mm beyond the edge of the opening on each side. For the interior wall, apply two coats of waterproof coating, extending 300mm-350mm beyond the edge of the opening on each side.

[0016] Preferably, in step S3, when adjusting the verticality, the wall is used as the vertical reference plane, and a square is used for correction. The verticality can be adjusted by measuring the distance from the edge of the square to the waterproof sleeve with a steel tape measure. When measuring the horizontality, a spirit level is placed on the sleeve, and the horizontal window of the spirit level is observed to adjust the horizontality of the sleeve.

[0017] Preferably, in step S4, a work platform is set up according to the construction environment, and workers operate through the work platform; a full-span work platform is set up using scaffolding, with steel planks fixed on the top, and labor protection railings, toe boards, and access passages are set up; safety distance warning signs and warning lines are set up in the work area.

[0018] Preferably, in step S5, an alloy steel drill bit matching the opening size is used to mill the hole upwards along the contour line, starting from the bottom.

[0019] Preferably, in step S6, the concrete is poured from the indoor side using concrete with added waterproofing agent. After pouring, it should be sealed in time and kept moist for curing.

[0020] Preferably, in step S6, before pouring concrete, it should be observed whether there are a large number of air bubbles on the surface of the concrete. If so, let it stand to eliminate the air bubbles before pouring. During pouring, a small immersion vibrator is used to fully vibrate the concrete.

[0021] Preferably, the concrete is a fast-drying, micro-expansion fine aggregate concrete with a grade higher than that of the original wall concrete; the waterproofing agent has a higher impermeability grade than that of the original wall concrete.

[0022] Preferably, in step S7, the fastening device includes a stud mechanism and a clamping device. The stud mechanism includes a disc and a screw. One end of the disc connected to the screw is T-shaped. One end of the screw is clamped to one end of the waterproof sleeve by the disc. The other end of the screw passes through the waterproof sleeve and is positioned outside the waterproof sleeve. The clamping device includes a clamping end one and a clamping end two connected by a connecting column. The clamping end one has a small hole, and the clamping end two has a hole. The diameter of the hole is slightly larger than that of the waterproof sleeve. The clamping end two of the clamping device is sleeved outside the waterproof sleeve. The small hole of the clamping end one of the clamping device is threadedly connected to the screw. By rotating the clamping end one of the clamping device, it is displaced on the screw, thereby causing the clamping device to gradually move closer to the annular steel plate on the indoor side, thus enabling the clamping end two of the clamping device to sequentially clamp the annular steel plate and the rubber pad on the indoor side.

[0023] Preferably, in step S7, the waterproof sleeve on the indoor side is expanded. After the clamping device is clamped, the annular steel plate on the indoor side is spot welded to the waterproof sleeve. Then the clamping device is removed from the screw, and the annular steel plate on the indoor side is fully welded to the waterproof sleeve. Finally, the stud mechanism is removed.

[0024] Preferably, in step S7, after removing the clamping device and stud mechanism, a flared structure is installed at one end of the waterproof sleeve on the indoor side. The flared structure is used to avoid damage to the wires when installing wires in the waterproof sleeve.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] (1) The present invention achieves a tight seal by installing a waterproof sleeve through a hole in the back of the exterior wall, thereby tightly connecting the sealing gasket with the waterproof sleeve and the wall, effectively avoiding misoperation and improving the sleeve installation efficiency.

[0027] (2) The present invention uses a self-made fastening device for installing a waterproof sleeve by opening a hole in the back of the exterior wall. It can be reused repeatedly, has low manufacturing cost, is easy to operate and disassemble, and can effectively ensure the quality of work. The experiment has achieved certain economic benefits.

[0028] (3) The construction method of installing waterproof sleeves by opening holes in the exterior wall as described in this invention provides a new solution for electromechanical construction personnel when encountering situations where holes are opened in the wall. It avoids the problem that waterproof sleeves cannot be pre-embedded in the exterior wall surface because the wall has been constructed but no holes for electromechanical installation have been reserved. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the construction structure of a construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to the present invention.

[0030] Figure 2 A schematic cross-sectional view of the wall structure for a construction method of installing a waterproof sleeve by opening a hole in the exterior wall according to the present invention. Figure 1 ;

[0031] Figure 3 A schematic cross-sectional view of the wall structure for a construction method of installing a waterproof sleeve by opening a hole in the exterior wall according to the present invention. Figure 2 ;

[0032] Figure 4 This is a cross-sectional structural diagram illustrating the construction method for installing a waterproof sleeve by opening a hole in the exterior wall, as proposed in this invention.

[0033] Figure 5 This is a three-dimensional structural diagram of the fastening device in the construction method for installing a waterproof sleeve by opening a hole in the exterior wall, as proposed in this invention. Figure 1 ;

[0034] Figure 6 This is a three-dimensional structural diagram of the fastening device in the construction method for installing a waterproof sleeve by opening a hole in the exterior wall, as proposed in this invention. Figure 2 ;

[0035] Figure 7 This is a construction flowchart of a construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to the present invention.

[0036] The numbers in the diagram are as follows:

[0037] 1. Wall; 2. Circular steel plate; 3. Rubber pad; 4. Waterproof sleeve; 5. Clamping device; 6. Screw; 7. Flared structure; 8. Clamping end one; 9. Clamping end two; 10. Connecting column; 11. Disc. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] like Figures 1 to 6 As shown, this invention provides a construction method for installing waterproof sleeves by opening holes in the exterior wall. This invention is applicable when the wall has been constructed but no holes have been reserved for electromechanical installation, requiring the waterproof sleeve to be pre-embedded by opening holes in the exterior wall. The specific steps are as follows:

[0040] S1: Prepare the tools before construction. The tools include a measuring tape, ruler, marker, ink fountain, dust mask, goggles, and water drill.

[0041] S2: Positioning and laying out the lines to determine the opening position, marking the cross lines. The marking lines must extend at least 300mm beyond the hole diameter. Install the waterproof sleeve 4. During installation, align the center of the waterproof sleeve 4 with the cross lines to ensure that the axis of the waterproof sleeve 4 matches the cross lines.

[0042] S3: Measure and adjust the perpendicularity of the waterproof sleeve 4 to the wall 1 and the horizontal angle of the waterproof sleeve 4;

[0043] S4: Milling holes. Use an oil pen to mark the opening area and make a mark on the opening outline. Use a fixed water drill to mill the holes. After all the holes are milled, insert two steel pipes into the outline and use the two steel pipes as support slides to push the concrete column block out of the wall, thus completing the hole opening work.

[0044] S5: Roughening treatment of the inner surface of the hole: The loose parts inside the hole are removed manually with an electric pick, and the inner surface of the hole is roughened.

[0045] S6: Define one side of wall 1 as the outdoor side and the other side as the indoor side. This invention uses a rigid waterproof sleeve. The waterproof sleeve 4 is hoisted to the installation height. On the outdoor side, rubber pads 3 and annular steel plates 2 are sequentially placed on the waterproof sleeve 4. Then, it passes through the opening on the wall 1 and enters the indoor side. The annular steel plate 2 on the outdoor side is fixed to the waterproof sleeve 4 by full welding. Concrete is poured between the waterproof sleeve 4 and the opening on the indoor side to fill the gap.

[0046] Before pouring concrete, observe the surface for numerous air bubbles. If present, allow the concrete to stand until the bubbles dissipate before pouring. During pouring, use a small immersion vibrator to thoroughly compact the concrete. Use micro-expansion fine-aggregate concrete with a grade higher than the original design wall concrete. The waterproofing agent should also have a higher impermeability rating than the original design wall concrete. Concrete should be poured from the interior side using concrete with an internal waterproofing agent. After pouring, seal the surface promptly and maintain a moist environment for at least 14 days.

[0047] S7: After the concrete has dried completely, a rubber pad 3, a ring-shaped steel plate 2, and a fastening device are sequentially installed on the waterproof sleeve 4 on the indoor side. The fastening device includes a stud mechanism and a clamping device 5. The stud mechanism includes a disc 11 and a screw 6. One end of the disc 11 connected to the screw 6 is T-shaped. One end of the screw 6 is clamped to one end of the waterproof sleeve 4 by the disc 11. The other end of the screw 6 passes through the waterproof sleeve 4 and is positioned outside the waterproof sleeve 4. The clamping device 5 includes a clamping end 8 and a clamping end 9 connected by a connecting column 10. The clamping end 8 has a small hole, and the clamping end 9 has a hole. The diameter of the hole is slightly larger than that of the waterproof sleeve 4. The clamping end 9 of the clamping device 5 is fitted over the waterproof sleeve 4. The small hole of the clamping end 8 of device 5 is threadedly connected to the screw 6. By rotating the clamping end 8 of the clamping device 5, it is displaced on the screw 6. The length of the clamping device 5 is greater than the length that the waterproof sleeve 4 needs to be clamped. Therefore, the annular steel plate 2 can be pushed towards the indoor annular steel plate by the clamping end 9. The clamping end 9 clamps the indoor annular steel plate 2 and the rubber pad 3 in sequence, and the waterproof sleeve 4 and the indoor wall are tightly fitted together. The purpose of the rubber pad 3 is to clamp the waterproof sleeve 4. The indoor waterproof sleeve 4 is made with a 10mm bulge. After the clamping device 5 clamps, the indoor annular steel plate and the waterproof sleeve 4 are spot welded. Then the clamping device 5 is removed from the screw 6. Then the indoor annular steel plate and the waterproof sleeve 4 are fully welded. Then the stud mechanism is removed.

[0048] S8: Waterproofing treatment: After the curing period, the part of the waterproof sleeve 1 that protrudes from the wall should be treated with waterproof mortar to facilitate the adhesion of waterproof membrane or waterproof coating;

[0049] S9: Applying waterproof membrane or waterproof coating: Before applying waterproof membrane or waterproof coating, the substrate must be fully dry and free of dampness. Otherwise, it must be dried before application. For exterior walls, which are generally the water-facing side, two coats of SBS waterproof membrane can be applied, with each coat extending at least 500mm beyond the edge of the opening. For interior walls, two coats of waterproof coating should be applied, with each coat extending at least 300mm beyond the edge of the opening.

[0050] Furthermore, in step S3 of the present invention, when adjusting the verticality, the wall 1 is used as the vertical reference plane, and a square is used for correction. The verticality can be adjusted by measuring the distance from the edge of the square to the waterproof sleeve 4 with a steel tape measure. The error range is acceptable if it is between 2-3°. When measuring the horizontality, a 1m level is placed on the sleeve, and the sleeve can be adjusted to be horizontal by observing that the bubble in the horizontal window of the level is in the center.

[0051] Furthermore, in step S4 of the present invention, a work platform can be set up according to the construction environment, such as an outdoor environment or a high-altitude environment. A full-span work platform can be set up using φ50 scaffolding, with steel planks fixed on the top and labor protection railings, toe boards, and access passages set up. Safety distance warning signs and warning lines are set up in the work area.

[0052] Furthermore, in step S5 of the present invention, an alloy steel drill bit with a diameter of 108 mm and a length of 420 mm is used to mill the hole upwards along the contour line, starting from the bottom, and then drilling around the perimeter along the contour line to push the concrete out from the inside.

[0053] Furthermore, in this invention, after removing the clamping device 5 and the stud mechanism, a flared structure 7 is installed at one end of the waterproof sleeve 4 on the indoor side. This flared structure 7 can prevent damage to the wires when the waterproof sleeve 4 is used for wire installation.

[0054] The following description is based on specific embodiments:

[0055] Example

[0056] like Figure 7 As shown, the construction steps are as follows:

[0057] S0: The wall thickness of the project is 800mm. The wall construction has been completed but no holes for waterproof sleeves have been reserved. Due to the need for electromechanical installation, it is necessary to make holes in the wall to pre-embed waterproof sleeves. Since the wall is relatively thick, making holes in the wall may have a certain impact on the wall's load-bearing capacity, rigidity and seismic performance. Therefore, the opening should be locally reinforced when filling the hole.

[0058] S1: Preparations before construction:

[0059] S11: Prepare tools including a measuring tape, ruler, ballpoint pen, ink line, dust mask, goggles, and water drill.

[0060] S2: Positioning and marking: Determine the opening position, mark the cross lines. The marking lines must extend at least 300mm beyond the hole diameter. When installing the waterproof sleeve 4, align the center of the waterproof sleeve 4 with the cross lines to ensure that the axis of the waterproof sleeve 4 matches the cross lines.

[0061] S3: Measurement and Adjustment

[0062] S31: Verticality adjustment: Using wall 1 as the vertical reference plane, use a square to correct the verticality, and use a steel tape measure to measure the distance from the edge of the square to the waterproof sleeve 4 to adjust its verticality.

[0063] S32: Levelness measurement: Place a 1m level on the sleeve and observe the level window of the level to adjust the level of the sleeve.

[0064] S4: Work platform erection: A full-span work platform is erected using φ50 scaffolding, with the top fully covered with steel planks, and equipped with labor protection railings, toe boards, and access passages; safety distance warning signs and warning lines are set up in the work area.

[0065] S5: Milling: Use a fixed water drill with a 108mm diameter, 420mm long alloy steel drill bit, the specific size depending on the hole dimensions. Use an oil pen to mark the hole area and outline the hole. Start milling from the bottom along the outline upwards. After all holes are milled, insert two φ50mm steel pipes below the outline as support rails to push the concrete column block within the outline out of the wall, completing the opening of the φ300mm hole.

[0066] S6: Roughening treatment of the inner surface of the hole: The loose parts inside the hole are removed manually with an electric pick and the inner surface of the hole is roughened.

[0067] S7: Define one side of wall 1 as the outdoor side and the other side as the indoor side. This project uses a rigid waterproof sleeve. The waterproof sleeve 4 is hoisted to the installation height. On the outdoor side, a thin screw 6 with a disc 11 is passed through the φ273mm waterproof sleeve 4. A 6mm thick rubber pad 3 and a 10mm thick annular steel plate 2 are then placed on the sleeve in sequence. The screw 6 then passes through the opening on the wall 1 and enters the indoor side. When the waterproof sleeve passes through the opening to the indoor side, the disc 11 is engaged with a section of the waterproof sleeve on the outdoor side. The screw 6 passes through the waterproof sleeve on the indoor side. The annular steel plate 2 on the outdoor side is fixed to the waterproof sleeve 4 by full welding. Concrete is poured between the waterproof sleeve 4 on the indoor side and the opening for filling.

[0068] Concrete pouring: Use fast-drying, micro-expansion fine aggregate concrete with a grade two levels higher than the original wall concrete design, and add waterproofing agent to achieve a permeability grade two levels higher than the original wall concrete design. Pour the prepared concrete between the waterproof sleeve 4 on the indoor side and the opening.

[0069] Before pouring concrete, observe the surface for a large number of air bubbles. If present, allow the concrete to stand until the bubbles dissipate before pouring. During pouring, use a small immersion vibrator to thoroughly compact the concrete. If necessary, tapping the formwork can be used to assist in compaction.

[0070] After pouring, the concrete should be sealed in time and kept moist for curing. The curing time is 7-14 days, depending on the type of concrete used.

[0071] S8: After the concrete has dried completely, thread a 6mm thick rubber pad and a 10mm thick annular steel plate onto the waterproof sleeve 4 on the indoor side, along with a fastening device. Secure the rubber pad 3 and annular steel plate 2 on the indoor waterproof sleeve 4 to the waterproof sleeve 4 and the indoor wall using the fastening device. After fastening, make a 10mm bulge in the indoor waterproof sleeve 4. Then, spot weld the annular steel plate to the indoor waterproof sleeve 4. After removing the fastening device, fully weld the annular steel plate to the indoor waterproof sleeve 4.

[0072] S9: Waterproofing treatment: Apply waterproof mortar to the protruding part of the waterproof sleeve 4 on the wall to facilitate the adhesion of waterproof membrane or waterproof coating;

[0073] S10: Applying waterproof membrane or waterproof coating: Before applying waterproof membrane or waterproof coating, the substrate must be fully dry and free of dampness. Otherwise, it must be dried before application. For exterior walls, which are generally the water-facing side, two coats of SBS waterproof membrane can be applied, with each coat extending at least 500mm beyond the edge of the opening. For interior walls, two coats of waterproof coating should be applied, with each coat extending at least 300mm beyond the edge of the opening.

[0074] S11: Overall waterproof performance test.

[0075] This invention utilizes a fastening device for installing a waterproof sleeve by drilling a hole in the back of the exterior wall. This device tightly connects the sealing gasket to the waterproof sleeve and the wall, achieving a seal, effectively preventing misoperation, and improving sleeve installation efficiency. The fastening device for installing the waterproof sleeve by drilling a hole in the back of the exterior wall is self-made, reusable, low-cost, simple to operate, and easy to disassemble, effectively ensuring work quality. Experiments have shown certain economic benefits. This invention provides a new solution for electromechanical construction personnel when encountering situations requiring holes in the back of walls, avoiding the problem of not being able to pre-install waterproof sleeves in holes drilled in the exterior wall after construction is complete.

[0076] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0078] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A construction method for installing a waterproof sleeve by opening a hole in the exterior wall after construction, characterized in that, The steps are as follows: S1: Prepare tools before construction; S2: Positioning and layout; S3: Measure and adjust the perpendicularity of the waterproof sleeve (4) to the wall (1) and the horizontal angle of the waterproof sleeve (4); S4: Milling holes; S5: Roughening treatment of the inner surface of the hole; S6: Define one side of the wall (1) as the outdoor side and the other side as the indoor side. Lift the waterproof sleeve (4) to the installation height. On the outdoor side, install the rubber pad (3) and the ring steel plate (2) on the waterproof sleeve (4) in sequence. Then, pass through the opening on the wall (1) and enter the indoor side. Fix the ring steel plate (2) on the outdoor side to the waterproof sleeve (4) by full welding. Fill the gap between the waterproof sleeve (4) and the opening on the indoor side with concrete. Before pouring concrete, observe whether there are a large number of air bubbles on the concrete surface. If so, let it stand to eliminate the air bubbles before pouring. When pouring, use a small immersion vibrator to fully vibrate the concrete. S7: After the concrete has dried, rubber pads (3), ring steel plates (2) and fastening devices are sequentially installed on the waterproof sleeve (4) on the indoor side. The rubber pads (3) and ring steel plates (2) on the waterproof sleeve (4) on the indoor side are tightly attached to the waterproof sleeve (4) and the wall on the indoor side through the fastening devices. Then, the ring steel plates on the indoor side are spot welded to the waterproof sleeve (4) on the indoor side. After removing the fastening devices, the ring steel plates are fully welded to the waterproof sleeve (4) on the indoor side. The fastening device includes a stud mechanism and a clamping device (5). The stud mechanism includes a disc (11) and a screw (6). The disc (11) is connected to one end of the screw (6) in a T-shape. One end of the screw (6) is clamped to one end of the waterproof sleeve (4) by the disc (11). The other end of the screw (6) passes through the waterproof sleeve (4) and is located outside the waterproof sleeve (4). The clamping device (5) includes a clamping end one (8) and a clamping end two (9) connected by a connecting post (10). The clamping end one (8) has a small hole. The second end (9) is provided with a hole, the diameter of which is slightly larger than that of the waterproof sleeve (4); the second end (9) of the pressing device (5) is sleeved on the outside of the waterproof sleeve (4), and the small hole of the first end (8) of the pressing device (5) is threadedly connected to the screw (6); by rotating the first end (8) of the pressing device (5), it is displaced on the screw (6), thereby causing the pressing device (5) to gradually move closer to the annular steel plate on the indoor side, so that the second end (9) of the pressing device (5) presses the annular steel plate (2) and the rubber pad (3) on the indoor side in sequence; Furthermore, the waterproof sleeve (4) on the indoor side is expanded. After the clamping device (5) is clamped, the annular steel plate on the indoor side is spot welded to the waterproof sleeve (4). Then the clamping device (5) is removed from the screw (6). Then the annular steel plate on the indoor side is fully welded to the waterproof sleeve (4). Then the stud mechanism is removed. S8: Waterproofing treatment; S9: Apply waterproof membrane or waterproof coating: For the exterior wall, which is the water-facing side, apply two coats of SBS waterproof membrane, extending 500mm-550mm beyond the edge of the opening on each side. For the interior wall, apply two coats of waterproof coating, extending 300mm-350mm beyond the edge of the opening on each side.

2. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 1, characterized in that, In step S3, when adjusting the verticality, the wall (1) is used as the vertical reference plane, and a square is used for correction. The verticality can be adjusted by measuring the distance from the edge of the square to the waterproof sleeve (4) with a steel tape measure. When measuring the horizontality, the level is placed on the sleeve, and the horizontal window of the level is observed to adjust the horizontality of the sleeve.

3. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 1, characterized in that, In step S4, a work platform is set up according to the construction environment, and workers operate through the work platform; a full-span work platform is set up using scaffolding, with steel planks fixed on the top, and labor protection railings, toe boards, and access passages are set up; safety distance warning signs and warning lines are set up in the work area.

4. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 1, characterized in that, In step S5, an alloy steel drill bit matching the opening size is used to mill the hole upwards along the contour line, starting from the bottom.

5. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 1, characterized in that, In step S6, the concrete is poured from the indoor side using concrete with added waterproofing agent. After pouring, it should be sealed in time and kept moist for curing.

6. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 5, characterized in that, The concrete used is a fast-drying, micro-expansion fine aggregate concrete with a grade higher than that of the original wall concrete; the waterproofing agent has a higher impermeability grade than that of the original wall concrete.

7. The construction method for installing a waterproof sleeve by opening a hole in the exterior wall according to claim 1, characterized in that, In step S7, after removing the clamping device (5) and the stud mechanism, a flared structure (7) is installed at one end of the waterproof sleeve (4) on the indoor side. The flared structure (7) is used to avoid damage to the wires when installing wires in the waterproof sleeve (4).

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