A waterproofing patching device and method for a building expansion joint

Abstract

The application discloses a waterproof repairing device and method for a house expansion joint, relates to the technical field of expansion joint waterproof repairing, and comprises a water stop belt and a base, the water stop belt is attached to a building wall body, the top end of the water stop belt is provided with the base, the base is fixed to the building wall body through expansion bolts, the water stop belt comprises a horizontal part and a vertical part, a V-shaped opening is formed in the inner side of the horizontal part, the wall surfaces of the horizontal part and the vertical part are respectively provided with a tensioning plate and a pressing plate which have a pressing function, a first spring and a pressing plate and other structures are arranged, when the width of the expansion joint of the building wall body changes due to thermal expansion and cold contraction or other reasons or the elasticity of the water stop belt decreases, the pressure of the pressing plate on the water stop belt is also adaptively adjusted in real time under the action of the first spring and other related structures, so that the water stop belt and the building wall body are always maintained in a preset sealing pressure interval, and problems such as overpressure damage or underpressure leakage are prevented.

Description

Technical Field

[0001] This invention relates to the field of waterproofing and leak repair technology for expansion joints, and particularly to a waterproofing and leak repair device and method for building expansion joints. Background Technology

[0002] Expansion joints, also known as building expansion joints, are structural joints installed at appropriate locations along the construction joint direction of a building or structure to prevent cracks or damage caused by changes in climate temperature (thermal expansion and contraction). Expansion joints divide building components above the foundation, such as walls, floors, and roofs (except for wooden roofs), into two independent parts, allowing the building or structure to expand and contract horizontally along its length. To ensure that rainwater does not seep into the expansion joint, waterproofing and leak-proofing devices are usually installed inside.

[0003] Existing waterproofing and leak repair devices mainly include waterstops, aluminum alloy bases, center plates, stainless steel cover plates, and stainless steel plastic expansion bolts for fixing the rubber waterstops and other related components. When installing these devices, the waterstops need to be placed at the bottom of the aluminum alloy base, and then the aluminum alloy base and waterstops are rigidly fixed to the building wall using the stainless steel plastic expansion bolts. While this method can achieve a waterproofing effect, the following problems still exist in practical use: Aging and plastic deformation of sealing materials: Waterstops (usually made of elastic materials such as rubber or PVC) will age, harden, undergo plastic deformation, or suffer fatigue damage under long-term pressure. Rigid connections cannot compensate for these material properties degradations; once the elasticity of the waterstop decreases, the sealing effect will also decrease. Stress concentration and localized damage: Rigid connections result in uneven pressure distribution between the pressure plate and the waterstop, easily leading to stress concentration at the edges of bolt holes or pressure plates. When the expansion joint undergoes significant displacement, this stress concentration can cause localized tearing or perforation of the waterstop, or even damage to the edges of the concrete structure. Therefore, this paper proposes a waterproofing and leak repair device and its application method for building expansion joints to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproofing and leak repair device for building expansion joints to solve the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A waterproofing and leak repair device for building expansion joints includes a waterstop and a base. The waterstop is attached to the building wall, and the base is provided at the top of the waterstop. The base is fixed to the building wall by expansion bolts. The waterstop includes a horizontal part and a vertical part. A "V" shaped opening is provided on the inner side of the horizontal part. Tensioning plates and pressure plates for pressing are respectively provided on the walls of the horizontal part and the vertical part.

[0006] Preferably, a guide post is slidably connected to the inner side of the base, the guide post is fixedly connected to the pressure plate, a slider is slidably connected to the outer side of the guide post, a first spring is sleeved on the outer side of the guide post, and the two ends of the first spring are fixedly connected to the pressure plate and the slider respectively, and a guide frame is slidably connected to the outer side of the slider.

[0007] Preferably, the first spring applies a force to the pressure plate to compress the waterstop strip.

[0008] Preferably, there are two bases, one of which has a guide shaft slidably connected to its inner side, and the other base has an adjusting screw screw spirally connected to its inner side. The bottom ends of the guide shaft and the adjusting screw are respectively fixedly and rotatably connected to support columns. One end of each of the two support columns is rotatably connected to a connecting beam, and the two connecting beams are rotatably connected. The two connecting beams are rotatably connected to the corresponding guide frames.

[0009] Preferably, one end of the tensioning plate is rotatably connected to a horizontal plate, and the horizontal plate is slidably connected to the pressure plate. One end of the tensioning plate is fixedly connected to a second spring, and the other end of the second spring is fixedly connected to the horizontal plate.

[0010] Preferably, the second spring applies a force to the tensioning plate that compresses the waterstop.

[0011] Preferably, each of the horizontal plates is provided with a tensioning plate on both sides, and the number of second springs corresponds to the number of tensioning plates.

[0012] Preferably, the bottom end of the horizontal plate is fixedly connected to a shell, the inner side of the shell is slidably connected to an inner plate, and the inner plate is fixedly connected to the guide frame.

[0013] Preferably, a center plate is slidably connected to the inner side of the base, and a cover plate is provided at the top of the base. A screw is threadedly connected to the inner side of the cover plate, and the screw is threadedly connected to the center plate.

[0014] The present invention also provides a method for using the above-described apparatus, comprising the following steps: 1) Install the waterstop into the expansion joint: First, place the vertical part of the waterstop inside the expansion joint, and arrange the horizontal part on both sides of the expansion joint; then install the base with the pre-installed pressure plate and tension plate above the waterstop, so that the pressure plate is in contact with the wall surface of the vertical part, and the tension plate is in contact with the wall surface of the "V" shaped opening of the horizontal part; finally, fix the base to the building wall with expansion bolts. 2) Adjust the initial sealing pressure: Adjust the pressure of the tension plate and pressure plate on the horizontal and vertical parts of the waterstop to maintain the waterstop and the building wall and base within the preset sealing pressure range.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A waterproofing and leak repair device for building expansion joints, comprising an adjusting screw, connecting beam, guide shaft, guide frame, slider, guide column, first spring, and pressure plate, etc. When the width of the building wall expansion joint changes due to thermal expansion and contraction or other reasons, or when the elasticity of the waterstop decreases, the pressure of the pressure plate on the waterstop will also be adaptively adjusted in real time under the action of the first spring and other related structures, so that the waterstop and the building wall are always maintained within the preset sealing pressure range, preventing overpressure damage or underpressure leakage. Moreover, this method adopts a non-rigid compression design, which does not require the waterstop to be rigidly connected to the base and the building wall with bolts, fundamentally eliminating the hidden dangers of local tearing and perforation of the waterstop caused by stress concentration.

[0016] 2. A waterproofing and leak repair device for building expansion joints, comprising a horizontal plate, a second spring, a tensioning plate, etc. Under the action of the tensioning plate and the second spring, the waterstop and the building wall and cover plate are always kept within a preset sealing pressure range. At the same time, when the width of the building wall expansion joint changes due to thermal expansion and contraction or other reasons, or when the elasticity of the waterstop decreases, the tensioning plate can automatically adjust the compression of the second spring to achieve real-time adaptive adjustment of the sealing pressure, thereby ensuring the long-term reliability of the sealing interface. Attached Figure Description

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0019] Figure 2 This is a side view of the installation structure of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0020] Figure 3 This is a schematic diagram of the installation structure of the guide shaft of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0021] Figure 4 This is a side view of the installation structure of the waterstop strip of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0022] Figure 5 This is a schematic diagram of the installation structure of the support column for a waterproofing and leak repair device for building expansion joints according to the present invention.

[0023] Figure 6 This is a schematic diagram of the installation structure of the slider of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0024] Figure 7 This is a schematic diagram of the installation structure of the inner plate of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0025] Figure 8 This is a schematic diagram of the screw installation structure of a waterproofing and leak repair device for building expansion joints according to the present invention.

[0026] Figure 9 This is a schematic diagram of the structure of a waterstop strip for a waterproofing and leak repair device for building expansion joints according to the present invention.

[0027] In the diagram: 1. Waterstop strip; 101. Horizontal section; 102. Vertical section; 2. Base; 3. Cover plate; 4. Screw; 5. Center plate; 6. Support column; 7. Adjusting screw; 8. Connecting beam; 9. Guide shaft; 10. Guide frame; 11. Slider; 12. Guide column; 13. First spring; 14. Inner plate; 15. Outer shell; 16. Horizontal plate; 17. Second spring; 18. Tensioning plate; 19. Pressure plate. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. At the same time, all precision instruments such as lead screws, screws, gears, racks, etc. are provided with protective structures such as protective covers. As these are common knowledge, they are not described in detail in the specification. It is understandable for those skilled in the art that some common structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To make the technical means, creative features, objectives, and effects of this invention easier to understand, it should be noted in the description of this invention that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The invention will be further described below in conjunction with specific embodiments. Example

[0030] like Figures 1-9 As shown, a waterproofing and leak repair device for building expansion joints includes a waterstop 1 and a base 2. The waterstop 1 is attached to the building wall. The waterstop 1 is made of EPDM rubber as the main material. This material is known for its excellent weather resistance, aging resistance and chemical stability, which can effectively ensure its reliability and durability in long-term use. The top of the waterstop 1 is provided with a base 2, which is fixed to the building wall by expansion bolts. The waterstop 1 includes a horizontal part 101 and a vertical part 102. A "V" shaped opening is provided on the inner side of the horizontal part 101. Tensioning plates 18 and pressure plates 19 for pressing are respectively provided on the walls of the horizontal part 101 and the vertical part 102. When installing and using the waterstop 1, it is necessary to ensure that the "V" shaped opening wall of the horizontal part 101 and the wall of the vertical part 102 are pressed by the corresponding tensioning plates 18 and pressure plates 19 respectively. By reasonably designing the length of a single tensioning plate 18 and pressure plate 19, multiple tensioning plates 18 and multiple pressure plates 19 can be spliced ​​together to press the walls of the horizontal part 101 and the vertical part 102 respectively.

[0031] When the width of the expansion joint of the building wall changes due to thermal expansion and contraction or other reasons, or when the elasticity of the waterstop 1 decreases, the pressure of the pressure plate 19 on the waterstop 1 will also be adaptively adjusted in real time under the action of the first spring 13 and other related structures. This ensures that the waterstop 1 and the building wall are always kept within the preset sealing pressure range, preventing overpressure damage or underpressure leakage. Moreover, this method adopts a non-rigid compression design, which does not require the waterstop 1 to be rigidly connected to the base 2 and the building wall with bolts, fundamentally eliminating the hidden dangers of local tearing and perforation of the waterstop 1 caused by stress concentration.

[0032] Under the action of the tension plate 18 and the second spring 17, the waterstop 1 and the building wall and cover plate 3 are always kept within the preset sealing pressure range. At the same time, when the width of the building wall expansion joint changes due to thermal expansion and contraction or other reasons, or when the elasticity of the waterstop 1 decreases, the tension plate 18 can automatically adjust the compression of the second spring 17 to achieve real-time adaptive adjustment of the sealing pressure, thereby ensuring the long-term reliability of the sealing interface.

[0033] As a further improvement to the present invention, such as Figure 4 , Figure 5 and Figure 6 As shown, a guide post 12 is slidably connected to the inner side of the base 2. The guide post 12 is fixedly connected to the pressure plate 19. A slider 11 is slidably connected to the outer side of the guide post 12. A first spring 13 is sleeved on the outer side of the guide post 12. The two ends of the first spring 13 are fixedly connected to the pressure plate 19 and the slider 11, respectively. A guide frame 10 is slidably connected to the outer side of the slider 11. The first spring 13 applies a force to the pressure plate 19 to compress the waterstop 1. By adjusting the compression of the first spring 13 between the pressure plate 19 and the slider 11, the preload applied by the first spring 13 to the pressure plate 19 can be changed, thereby adjusting the magnitude of the compressive force generated by the pressure plate 19 on the vertical part 102 of the waterstop 1, so that the vertical part 102 of the waterstop 1 and the building wall are kept within the preset sealing pressure range.

[0034] As a further improvement to the present invention, such as Figure 4 and Figure 5 As shown, there are two bases 2. One base 2 has a guide shaft 9 slidably connected to its inner side, and the other base 2 has an adjusting screw 7 screwed to its inner side. The bottom ends of the guide shaft 9 and the adjusting screw 7 are respectively fixedly and rotatably connected to support columns 6. When the adjusting screw 7 and the support column 6 rotate, the support column 6 can move vertically. One end of each support column 6 is rotatably connected to a connecting beam 8, and the two connecting beams 8 are rotatably connected, forming a scissor linkage mechanism between them. Two connecting beams 8 are rotatably connected to the corresponding guide frames 10. When installing the waterstop 1 into the expansion joint, first place the vertical part 102 of the waterstop 1 into the expansion joint, and arrange the horizontal part 101 on both sides of the expansion joint. Then install the base 2, which is pre-installed with the pressure plate 19, tension plate 18 and other structures, above the waterstop 1. Make the pressure plate 19 fit against the wall of the vertical part 102, and the tension plate 18 fit against the "V" shaped opening wall of the horizontal part 101. Finally, fix the base 2 to the building wall with expansion bolts.

[0035] After fixing, the operator can adjust the pressure exerted by the tension plate 18 and pressure plate 19 on the horizontal part 101 and vertical part 102 of the waterstop 1 to maintain the waterstop 1 within the preset sealing pressure range between it and the building wall and cover plate 3. The top of the adjusting screw 7 has an Allen wrench insertion port. The operator can rotate the adjusting screw 7 using the Allen wrench. When rotating the adjusting screw 7, the corresponding support column 6 moves vertically. During the movement of the support column 6, the two adjacent connecting beams 8 rotate relative to each other. When the connecting beams 8 rotate, the corresponding guide frame 10 moves, causing the guide frame 10 to move the slider 11 horizontally along the guide column 12, while the guide frame 10 itself moves vertically along the slider 11. At this time, the compression of the first spring 13 between the slider 11 and pressure plate 19 changes accordingly. The pressure exerted by the first spring 13 on the vertical part 102 of the waterstop 1 through the pressure plate 19 is also adjusted accordingly, ultimately maintaining the waterstop 1 within the preset sealing pressure range between it and the building wall.

[0036] As a further improvement to the present invention, such as Figure 4 , Figure 5 and Figure 6 As shown, one end of the tensioning plate 18 is rotatably connected to the horizontal plate 16, and the horizontal plate 16 is slidably connected to the pressure plate 19. One end of the tensioning plate 18 is fixedly connected to the second spring 17, and the other end of the second spring 17 is fixedly connected to the horizontal plate 16. The second spring 17 applies a force to the tensioning plate 18 to compress the waterstop 1. By adjusting the compression of the second spring 17 between the tensioning plate 18 and the horizontal plate 16, the preload applied by the second spring 17 to the tensioning plate 18 can be changed, thereby adjusting the magnitude of the compressive force generated by the tensioning plate 18 on the "V" shaped opening of the horizontal part 101 of the waterstop 1, so that the horizontal part 101 of the waterstop 1 is kept within the preset sealing pressure range between the building wall and the base 2.

[0037] As a further improvement to the present invention, such as Figure 4 , Figure 5 and Figure 6 As shown, tension plates 18 are provided on both sides of each horizontal plate 16, and the number of second springs 17 corresponds to the number of tension plates 18, ensuring that tension plates 18 at different positions can be stably pressed together with the "V" shaped opening of the horizontal part 101 of the waterstop 1 under the elastic force of the corresponding second spring 17.

[0038] As a further improvement to the present invention, such as Figure 4 , Figure 5 and Figure 7 As shown, the bottom end of the horizontal plate 16 is fixedly connected to the outer shell 15, the inner plate 14 is slidably connected to the inner side of the outer shell 15, and the inner plate 14 is fixedly connected to the guide frame 10. The outer shell 15 and the inner plate 14 can move relative to each other in the vertical direction, ensuring that the guide frame 10 can move normally in the vertical direction when the adjacent connecting beams 8 rotate. Workers use an Allen wrench to turn the adjusting screw 7, causing the adjacent connecting beams 8 to rotate relative to each other. When the guide frame 10 moves horizontally, it also drives the horizontal plate 16 to move horizontally along the base 2 through the inner plate 14 and the outer shell 15. This causes the horizontal plate 16 to move the tension plate 18 relative to the "V"-shaped opening of the horizontal part 101 of the waterstop 1. At this time, the compression of the tension plate 18 and the second spring 17 changes, and the squeezing force of the tension plate 18 on the "V"-shaped opening of the horizontal part 101 of the waterstop 1 is also adjusted accordingly, so that the horizontal part 101 of the waterstop 1 and the building wall and base 2 are maintained within the preset sealing pressure range.

[0039] The above method achieves the initial adjustment of the compressive force of the tensioning plate 18 and the pressure plate 19.

[0040] As a further improvement to the present invention, such as Figure 1 , Figure 2 , Figure 4 and Figure 8 As shown, a center plate 5 is slidably connected to the inner side of the base 2, and a cover plate 3 is provided at the top of the base 2. A screw 4 is threadedly connected to the inner side of the cover plate 3, and the screw 4 is threadedly connected to the center plate 5. After the initial adjustment of the tension plate 18 and the pressure plate 19 is achieved, the operator puts the cover plate 3 on top of the base 2, and then fixes the cover plate 3 and the center plate 5 together with the screw 4.

[0041] Because the center plate 5 and the base 2 are in a sliding fit, when the expansion joint of the building wall is displaced due to environmental factors, the base 2, which is rigidly connected to the wall, will move relative to it. At this time, the base 2 drives the support column 6 to move horizontally synchronously through the guide shaft 9 and the adjusting screw 7, thereby causing the two adjacent connecting beams 8 to rotate relative to each other.

[0042] Taking the expansion joint widening condition as an example: the two bases 2 move away from each other, and the connecting beam 8 drives the slider 11 to move towards the pressure plate 19 through the guide frame 10, thereby compensating for the space increase caused by the increase in joint width, so that the compression of the first spring 13 is maintained within the set range, and the vertical part 102 of the waterstop 1 is always kept within the preset sealing pressure range.

[0043] Meanwhile, the guide frame 10, through the linkage of the inner plate 14, the outer shell 15, and the horizontal plate 16, drives the tensioning plate 18 to move towards the inside of the "V"-shaped opening of the horizontal part 101 of the waterstop 1, so that the preload of the second spring 17 remains stable, effectively avoiding insufficient sealing pressure caused by changes in the gap width. Through the real-time adaptive adjustment of the pressure plate 19 and the tensioning plate 18, the waterstop 1 and the building wall and base 2 are always maintained within the preset sealing pressure range, fundamentally solving the problem of overpressure damage or underpressure leakage; moreover, this method adopts a non-rigid compression design, which does not require the waterstop 1 to be rigidly connected to the base 2 and the building wall with bolts, fundamentally eliminating the hidden dangers of local tearing and perforation of the waterstop caused by stress concentration.

[0044] The usage method is as follows: Installation phase: When installing the waterstop 1 into the expansion joint, first place the vertical part 102 of the waterstop 1 into the expansion joint, and arrange the horizontal part 101 on both sides of the expansion joint; then install the base 2, which is pre-installed with the pressure plate 19, tension plate 18 and other structures, above the waterstop 1, so that the pressure plate 19 fits against the wall surface of the vertical part 102, and the tension plate 18 fits against the wall surface of the "V" shaped opening of the horizontal part 101. Finally, fix the base 2 to the building wall with expansion bolts.

[0045] After fixing, the operator can adjust the pressure exerted by the tension plate 18 and pressure plate 19 on the horizontal part 101 and vertical part 102 of the waterstop 1 to maintain the waterstop 1 within the preset sealing pressure range between it and the building wall and base 2. The top of the adjusting screw 7 has an Allen wrench insertion port. The operator can rotate the adjusting screw 7 using the Allen wrench. When rotating the adjusting screw 7, the corresponding support column 6 moves vertically. During the movement of the support column 6, the two adjacent connecting beams 8 rotate relative to each other. When the connecting beams 8 rotate, the corresponding guide frame 10 moves, causing the guide frame 10 to move the slider 11 horizontally along the guide column 12, while the guide frame 10 itself moves vertically along the slider 11. At this time, the compression of the first spring 13 between the slider 11 and the pressure plate 19 changes accordingly. The pressure exerted by the first spring 13 on the vertical part 102 of the waterstop 1 through the pressure plate 19 is also adjusted accordingly, ultimately maintaining the waterstop 1 within the preset sealing pressure range between it and the building wall.

[0046] At the same time, when the guide frame 10 moves horizontally, it will also drive the horizontal plate 16 to move horizontally along the base 2 through the inner plate 14 and the outer shell 15, so that the horizontal plate 16 drives the tension plate 18 to move relative to the horizontal part 101 of the waterstop 1 in a "V" shape. At this time, the compression of the tension plate 18 and the second spring 17 changes, and the squeezing force of the tension plate 18 on the horizontal part 101 of the waterstop 1 is also adjusted accordingly, so that the horizontal part 101 of the waterstop 1 and the building wall and the base 2 are also maintained in the preset sealing pressure range.

[0047] Through the above steps, the initial adjustment of the compressive force of the tension plate 18 and the pressure plate 19 can be completed. After the initial adjustment of the tension plate 18 and the pressure plate 19 is completed, the operator places the cover plate 3 on top of the base 2, and then fixes the cover plate 3 to the center plate 5 together with screws 4.

[0048] Protection phase: Because the center plate 5 and the base 2 are in a sliding fit, when the expansion joint of the building wall is displaced due to environmental factors, the base 2, which is rigidly connected to the wall, will move relative to it. At this time, the base 2 drives the support column 6 to move horizontally synchronously through the guide shaft 9 and the adjusting screw 7, thereby causing the two adjacent connecting beams 8 to rotate relative to each other.

[0049] Taking the expansion joint widening condition as an example: the two bases 2 move away from each other, and the connecting beam 8 drives the slider 11 to move towards the pressure plate 19 through the guide frame 10, thereby compensating for the space increase caused by the increase in joint width, so that the compression of the first spring 13 is maintained within the set range, and the vertical part 102 of the waterstop 1 is always kept within the preset sealing pressure range.

[0050] Meanwhile, the guide frame 10, through the linkage of the inner plate 14, the outer shell 15, and the horizontal plate 16, drives the tensioning plate 18 to move inward toward the "V" shaped opening of the horizontal part 101 of the waterstop 1, so that the preload of the second spring 17 remains stable, effectively avoiding insufficient sealing pressure caused by changes in the gap width. Through the real-time adaptive adjustment of the pressure plate 19 and the tensioning plate 18, the waterstop 1 and the building wall and base 2 are always maintained within the preset sealing pressure range, fundamentally solving the problem of overpressure damage or underpressure leakage; moreover, this method adopts a non-rigid compression design, which does not require the waterstop 1 to be rigidly connected to the base 2 and the building wall with bolts, fundamentally eliminating the hidden dangers of local tearing and perforation of the waterstop caused by stress concentration.

[0051] The above are preferred embodiments of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the scope of protection of the present invention. All such changes and modifications fall within the scope of protection of the present invention as defined by the appended claims and their equivalents.

Claims

1. A waterproofing and leak-repairing device for building expansion joints, comprising a waterstop (1) and a base (2), characterized in that: The waterstop (1) is attached to the building wall. The top of the waterstop (1) is provided with a base (2). The base (2) is fixed to the building wall by expansion bolts. The waterstop (1) includes a horizontal part (101) and a vertical part (102). A "V" shaped opening is provided on the inner side of the horizontal part (101). The walls of the horizontal part (101) and the vertical part (102) are respectively provided with a tension plate (18) and a pressure plate (19) for pressing. The base (2) is slidably connected to a guide post (12), which is fixedly connected to a pressure plate (19). The guide post (12) is slidably connected to a slider (11) on the outside. A first spring (13) is sleeved on the outside of the guide post (12), and the two ends of the first spring (13) are fixedly connected to the pressure plate (19) and the slider (11) respectively. A guide frame (10) is slidably connected to the outside of the slider (11). There are two bases (2). One base (2) has a guide shaft (9) slidably connected to its inner side, and the other base (2) has an adjusting screw (7) spirally connected to its inner side. The bottom ends of the guide shaft (9) and the adjusting screw (7) are respectively fixedly and rotatably connected to support columns (6). One end of each of the two support columns (6) is rotatably connected to a connecting beam (8), and the two connecting beams (8) are rotatably connected. The two connecting beams (8) are rotatably connected to the corresponding guide frame (10). One end of the tensioning plate (18) is rotatably connected to a horizontal plate (16), and the horizontal plate (16) is slidably connected to the pressure plate (19). One end of the tensioning plate (18) is fixedly connected to a second spring (17), and the other end of the second spring (17) is fixedly connected to the horizontal plate (16).

2. A waterproofing and leak-repairing device for building expansion joints according to claim 1, characterized in that: The first spring (13) applies a force to the pressure plate (19) to compress the waterstop (1).

3. A waterproofing and leak-repairing device for building expansion joints according to claim 1, characterized in that: The second spring (17) applies a force to the tension plate (18) to compress the waterstop (1).

4. A waterproofing and leak-repairing device for building expansion joints according to claim 1, characterized in that: Each of the horizontal plates (16) is provided with a tensioning plate (18) on both sides, and the number of second springs (17) corresponds to the number of tensioning plates (18).

5. A waterproofing and leak-repairing device for building expansion joints according to claim 4, characterized in that: The bottom end of the horizontal plate (16) is fixedly connected to the outer shell (15), and the inner plate (14) is slidably connected to the inner side of the outer shell (15), and the inner plate (14) is fixedly connected to the guide frame (10).

6. A waterproofing and leak-repairing device for building expansion joints according to claim 1, characterized in that: The base (2) has a center plate (5) slidably connected to its inner side, and a cover plate (3) is provided at the top of the base (2). The cover plate (3) has a screw (4) threadedly connected to its inner side, and the screw (4) is threadedly connected to the center plate (5).

7. A method for using a waterproofing and leak-repairing device for building expansion joints as described in any one of claims 1-6, characterized in that, Includes the following steps: 1) Install the waterstop (1) into the expansion joint: First, place the vertical part (102) of the waterstop (1) into the expansion joint, and arrange the horizontal part (101) on both sides of the expansion joint; then install the base (2) pre-installed with the pressure plate (19) and tension plate (18) above the waterstop (1), so that the pressure plate (19) fits against the wall of the vertical part (102), and the tension plate (18) fits against the wall of the "V" shaped opening of the horizontal part (101). Finally, fix the base (2) to the building wall with expansion bolts. 2) Adjust the initial sealing pressure: Adjust the pressure of the tension plate (18) and the pressure plate (19) on the horizontal part (101) and vertical part (102) of the waterstop (1) so that the waterstop (1) is maintained in the preset sealing pressure range between the building wall and the base (2).

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