A retractable anti-tear waterstop and method of use thereof

Abstract

The application belongs to the technical field of building construction, and particularly discloses a telescopic anti-tearing water stop, which comprises a middle water stop, side water stops, a telescopic structure, a shaping structure and anti-tearing structures. The middle water stop is provided with the side water stops on both sides. The telescopic structure is arranged between the middle water stop and the side water stops. The anti-tearing structures are detachably arranged at both ends of the side water stops. The shaping structure is arranged between both ends of the middle water stop and the corresponding anti-tearing structures. The telescopic structure comprises folding telescopic belts. The middle water stop is provided with cavities on both sides, and the folding telescopic belts are connected to the upper and lower sides of the cavities. The telescopic structure is arranged, displacement is generated on both sides of the deformation joint, the folding telescopic belts are deformed, the folding telescopic belts are pulled out and flattened, the effect of resisting tearing is achieved, the telescopic property of the water stop is effectively ensured, the service life of the water stop is prolonged, and the water stopping effect of the water stop is ensured.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building construction, in particular to a stretchable anti-tearing water stop and a use method thereof. BACKGROUND

[0002] Waterproofing of building deformation joints is one of the important constructions in underground engineering. The most ideal waterproofing measure for deformation joints is full-sealing waterproofing, that is, installing a waterproof layer on the water-facing surface of the structure to prevent water erosion and ensure the durability and safety of the structure. A water stop is usually buried at the deformation joint to achieve sealing and water stopping.

[0003] The document with the prior art publication number CN217557026U provides a stretchable anti-tearing water stop. A center control strip is arranged in the middle of the water stop. The center control strip is integrally connected with a center control band above and below. The upper and lower center control bands are respectively connected with symmetrical upper and lower storage protection shells. Stretchable bands are arranged in the upper and lower storage protection shells. The outer ends of the left and right stretchable bands are provided with inner limiting strips. The water stop is integrally provided with an outer control strip on the outer surface of the upper and lower storage protection shells. Compared with the traditional water stop, the water stop can stretch for a distance, effectively reducing the occurrence of the situation that the water stop is torn due to excessive settlement.

[0004] Although the prior art solution in the above can make the water stop stretch for a distance and reduce the occurrence of the situation that the water stop is torn due to excessive settlement, it still has the following defects.

[0005] When the water stop is installed, a steel plate and a bolt are usually used to fix the water stop and the structure. The bolt is arranged on the two sides of the water stop in the transverse direction. Therefore, when the structures on both sides of the deformation joint are deformed excessively, the water stop is pulled in the transverse direction. At this time, the water stop still has the phenomenon of being torn, which causes the water stopping effect of the water stop to be less than expected.

[0006] In view of this, the application provides a stretchable anti-tearing water stop and a use method thereof. SUMMARY

[0007] The application aims to provide a stretchable anti-tearing water stop and a use method thereof to solve the problems in the background art.

[0008] The application provides a stretchable anti-tearing water stop and a use method thereof, which adopt the following technical solution:

[0009] A stretchable anti-tearing water stop comprises a middle water stop, side water stops, a stretchable structure, a shaping structure and an anti-tearing structure.

[0010] The middle water stop is provided with the side water stops on both sides.

[0011] The stretchable structure is arranged between the middle waterstop and the side waterstop, and is used for preventing the middle waterstop and the side waterstop from being pulled apart;

[0012] The side waterstop is detachably provided with a tear-proof structure at both ends thereof;

[0013] The middle waterstop is provided with a shaping structure between both ends thereof and the corresponding tear-proof structure; the shaping structure is arranged on the side waterstop and is used for extruding the side waterstop downward, so that the side waterstop forms a concave structure.

[0014] By adopting the above technical scheme, the side waterstop is supported by the shaping structure, so that the side waterstop forms a downward concave structure, thereby achieving the operation of preventing the side waterstop and the middle waterstop from being pulled apart when the expansion joint is deformed to generate displacement.

[0015] Optionally, the middle waterstop is provided with cavities at both sides thereof, and the stretchable structure comprises a foldable stretchable belt; the foldable stretchable belt is connected to the cavities at both sides thereof, and the other end of the foldable stretchable belt is connected to the side waterstop; the side waterstop, the foldable stretchable belt and the middle waterstop are integrally formed.

[0016] By adopting the above technical scheme, the foldable stretchable belt is integrally formed with the side waterstop and the middle waterstop, and when displacement is generated on both sides of the deformation joint, the foldable stretchable belt is pulled outward and flattened, so that the stretchability of the foldable stretchable belt is ensured and the foldable stretchable belt is prevented from being pulled apart.

[0017] Optionally, the tear-proof structure comprises a panel, a connecting frame and a fastening bolt; one end of the side waterstop is detachably provided with the panel; the side waterstop is provided with a slot, and the connecting frame is arranged in the slot; the fastening bolt is movably inserted into the panel, and one end of the fastening bolt passes through the connecting frame and is connected to the structure.

[0018] By adopting the above technical scheme, the connecting frame is used for fastening the fastening bolt, so that when displacement is generated in the deformation joint, the side waterstop and the fastening bolt are prevented from being pulled apart at the connection position, and the stretchable belt is prevented from losing the water-stopping performance.

[0019] Optionally, edge protrusions are arranged at the upper and lower edges of the connecting frame, and the edge protrusions are attached to the outer surface of the side waterstop; a wire mesh is arranged in the side waterstop, and the wire mesh is integrally formed with the side waterstop.

[0020] By adopting the above technical scheme, the edge protrusions protect the edges of the slot, so that the edges of the side waterstop are prevented from being torn, and the wire mesh is used to protect the connection position of the side waterstop and the panel, so that the wire mesh increases the anti-tearing performance.

[0021] Optionally, the connecting frame is internally provided with a rubber block, and the rubber block is integrally formed with tear-off openings on both sides and is provided with a screw hole in the middle for accommodating the fastening bolt.

[0022] By using the above technical scheme, the rubber block and the tear-off openings buffer the side water stop belt, so that the fastening bolt has a space for accommodating the tension on both sides, thereby preventing the tension from tearing the water stop belt.

[0023] Optionally, the shaping structure comprises a roller, a connecting frame and a connecting rod.

[0024] The number of connecting rods is two, and the upper end of the connecting rod is fixedly connected to the outer wall of the panel on the anti-tearing structure. The roller is slidably arranged above the side water stop belt, and the connecting frame is rotatably connected to the outer side of the roller. The upper end of the connecting frame is slidably connected to the connecting rod on both sides, and one end of the connecting rod is connected to the outer wall of the panel.

[0025] By using the above technical scheme, the roller and the connecting rod naturally sag to shape the water stop belt.

[0026] Optionally, the connecting rod is externally provided with a first spring.

[0027] By using the above technical scheme, the first spring provides downward support force to the connecting frame.

[0028] Optionally, the shaping structure further comprises a limiting frame, a second connecting seat, an expansion plate and an outer frame plate.

[0029] Two groups of limiting frames are symmetrically fixedly arranged on the middle water stop belt, and the top of the limiting frame is fixedly provided with a second connecting seat. The expansion plate is rotatably connected to the second connecting seat. The outer frame plate is slidably connected to the expansion plate, and one end of the outer frame plate is fixedly provided with a shaft.

[0030] The first connecting seat is fixedly arranged on the outer wall of the connecting frame, and the shaft is rotatably arranged on the first connecting seat.

[0031] By using the above technical scheme, the middle water stop belt and the side water stop belt are limited, thereby avoiding tilting.

[0032] Optionally, the shaft is externally provided with a torsion spring, one end of the torsion spring is fixedly connected to the first connecting seat, the other end is connected to the outer wall of the shaft, the inner part of the outer frame plate is further provided with a second spring, and the two ends of the second spring are respectively fixedly connected to the expansion plate and the outer frame plate.

[0033] By using the above technical scheme, the limiting frame is extruded and limited by the torsion spring, so that the limiting frame can compress the middle water stop belt.

[0034] A method for using a telescopic anti-tearing waterstop, comprising the following steps:

[0035] S1, placing the side waterstop and the middle waterstop in a concave structure in the deformation joint, at this time the middle waterstop is located in the middle of the deformation joint, and then fixing the side waterstop, the panel and the structure through the rotation of the fastening bolt, and the fastening bolt is provided with a screw hole in the middle of the slot and the rubber block,

[0036] S2, when the side waterstop and the middle waterstop are placed in a concave structure in the deformation joint, the control connecting frame is pressed downward under the elastic action of the first spring, so that the roller presses the side waterstop to keep the concave structure,

[0037] S3, while the connecting frame is pressed downward, the limiting frame controls the middle waterstop through the action of the telescopic plate, the outer frame plate and the second spring, so that the middle waterstop keeps consistent with the side waterstop,

[0038] S4, when the structures on both sides of the deformation joint are deformed too much, the side waterstop will be subjected to tension on both sides, and then the folding telescopic belt is controlled to come out of the cavity to play a role in controlling the telescopic waterstop,

[0039] S5, when the side waterstop is subjected to tension on both sides, the fastening bolt can be buffered in the tearable opening integrally formed on both sides of the rubber block, so as to protect the slot and avoid the slot from cracking,

[0040] S6, at this time, the roller and the limiting frame can keep the side waterstop, the folding telescopic belt and the middle waterstop in a concave structure to the maximum extent through the action of the first spring, the second spring and the torsion spring.

[0041] In summary, the present application has at least one of the following beneficial technical effects:

[0042] 1. By arranging the telescopic structure, when the deformation joint on both sides is displaced, the folding telescopic belt is deformed and pulled out to be flat, so as to achieve the effect of resisting tearing, thereby effectively ensuring the telescopic property of the waterstop, prolonging the service life of the waterstop, and at the same time ensuring the waterstop effect of the waterstop.

[0043] 2. By arranging the shaping structure, the roller positions the side waterstop through the cooperation of the first spring, the second spring and the torsion spring, the telescopic plate controls the limiting frame to limit the middle waterstop, the middle waterstop keeps the concave structure design with the side waterstop, and then the waterstop can be closely connected with the deformation joint through the arrangement of the concave structure, so as to improve the waterstop effect of the waterstop.

[0044] 3. By setting the anti-tearing structure, using the connecting frame and the edge block, the side water stop belt can be protected when being pulled, and through the design of the rubber block and the tearing opening, the fastening bolt has a space for buffering the tension on both sides to prevent tearing. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The overall structure diagram of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0046] Figure 2 The stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0047] Figure 3 The anti-tearing structure diagram of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0048] Figure 4 The anti-tearing structure diagram of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0049] Figure 5 The local diagram of the setting structure of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0050] Figure 6 The setting structure diagram of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0051] Figure 7 The structure section view of the stretchable anti-tearing water stop belt disclosed in a preferred embodiment of the present application is shown.

[0052] The figure label is explained: 1, side water stop belt; 2, middle water stop belt; 3, folding stretchable belt; 4, face plate; 5, fastening bolt; 6, connecting frame; 7, edge block; 8, rubber block; 9, wire mesh; 11, roller; 12, connecting frame; 13, connecting rod; 14, first spring; 21, limiting frame; 22, first connecting seat; 23, second connecting seat; 24, stretchable plate; 25, outer frame plate; 26, second spring; 27, shaft rod; 28, torsion spring. DETAILED DESCRIPTION

[0053] The present application is further described in detail below in conjunction with the drawings of the specification.

[0054] Please refer to the drawings Figures 1-3 The present application provides a stretchable anti-tearing water stop belt, which comprises a middle water stop belt 2, a side water stop belt 1, a stretchable structure, a setting structure and an anti-tearing structure.

[0055] The middle water stop belt 2 is provided with a side water stop belt 1 on both sides;

[0056] The middle water stop belt 2 and the side water stop belt 1 are provided with a telescopic structure, which is used for preventing the middle water stop belt 2 and the side water stop belt 1 from being pulled apart;

[0057] The side water stop belt 1 is provided with a tear-resistant structure at both ends and is detachable;

[0058] The middle water stop belt 2 is provided with a shaping structure between both ends and the corresponding tear-resistant structure.

[0059] The telescopic structure comprises a folding telescopic belt 3;

[0060] The middle water stop belt 2 is provided with a cavity on both sides, and the folding telescopic belt 3 is connected to the upper and lower sides in the cavity, and the other end of the folding telescopic belt 3 is connected to the side water stop belt 1;

[0061] The side water stop belt 1, the folding telescopic belt 3 and the middle water stop belt 2 are integrally formed.

[0062] The folding telescopic belt 3, the side water stop belt 1 and the middle water stop belt 2 are integrally formed through the telescopic structure, and when the folding telescopic belt 3 is deformed due to displacement of both sides of the deformation joint, the folding telescopic belt 3 is pulled out and flattened, thereby achieving the effect of resisting tearing, effectively ensuring the telescopic property of the water stop belt, prolonging the service life of the water stop belt, and ensuring the water stopping effect of the water stop belt.

[0063] Please refer to the accompanying drawings Figures 5-7 The shaping structure is arranged above the side water stop belt 1, and is used for extruding the side water stop belt 1 downward to form a concave structure;

[0064] The shaping structure comprises a roller 11, a connecting frame 12 and a connecting rod 13;

[0065] The number of the connecting rod 13 is two, and the upper end of the connecting rod 13 is fixedly connected to the outer wall of the panel 4 on the tear-resistant structure; the roller 11 is slidably arranged above the side water stop belt 1, and the outer side of the roller 11 is rotatably connected to the connecting frame 12, and the upper end of the connecting frame 12 is slidably connected to the connecting rod 13 on both sides; the outer part of the connecting rod 13 is provided with a first spring 14; the fastening bolt 5 passes through the side water stop belt 1, and the side water stop belt 1 is fixed through the panel 4.

[0066] The shaping structure further comprises a limiting frame 21, a second connecting seat 23, a telescopic plate 24 and an outer frame plate 25;

[0067] Two groups of limiting frames 21 are symmetrically and fixedly arranged on the middle water stop belt 2, the top of the limiting frame 21 is fixedly provided with a second connecting seat 23, the second connecting seat 23 is rotatably connected with an expansion plate 24, the outside of the expansion plate 24 is slidably connected with an outer frame plate 25, and one end of the outer frame plate 25 is fixedly provided with a shaft rod 27;

[0068] The first connecting seat 22 is fixedly arranged on the outer wall of the connecting frame 12, the shaft rod 27 is rotatably arranged on the first connecting seat 22, the outside of the shaft rod 27 is provided with a torsion spring 28, one end of the torsion spring 28 is fixedly connected with the first connecting seat 22, and the other end of the torsion spring 28 is connected with the outer wall of the shaft rod 27;

[0069] The second spring 26 is further arranged in the inner part of the outer frame plate 25, and the two ends of the second spring 26 are fixedly connected with the expansion plate 24 and the outer frame plate 25 respectively;

[0070] Through the elastic force of the first spring 14, the connecting frame 12 can control the downward pressing of the roller shaft 11 to support the two side water stop belts 1, so that the middle water stop belt 2, the side water stop belt 1 and the expansion structure form a downward concave structure, through the cooperation of the second spring 26 and the torsion spring 28, the expansion plate 24 controls the limiting frame 21 to limit the middle water stop belt 2, so that it is consistent with the side water stop belt 1, thereby the water stop belt can be closely connected with the deformation joint through the concave structure, so as to improve the water stopping effect of the water stop belt, and the concave structure design of the water stop belt can prevent the side water stop belt 1 and the middle water stop belt 2 from being cracked when the expansion joint is deformed, finally, the concave structure design of the water stop belt can collect underground water, so that the fastening bolt 5 is not easy to be corroded by water.

[0071] Please refer to the attached Figures 2-4 The anti-tearing structure comprises a panel 4, a connecting frame 6 and a fastening bolt 5;

[0072] One end of the side water stop belt 1 is detachably provided with the panel 4, a slot is formed in the side water stop belt 1, the connecting frame 6 is mounted in the slot, the fastening bolt 5 is movably inserted in the panel 4, the surface of the panel 4 is designed in an inclined shape, which can guide underground water and protect the fastening bolt 5; one end of the fastening bolt 5 passes through the connecting frame 6 and is connected with the structure;

[0073] The edge protrusions 7 are installed at the upper and lower side edges of the connecting frame 6 and are attached to the outer surface of the side edge waterstop 1, a wire mesh 9 is arranged in the side edge waterstop 1 and is integrally formed with the side edge waterstop 1, and a rubber block 8 is installed in the connecting frame 6 and is integrally formed with the two sides in the interior of the rubber block 8 and is provided with a tear opening in the middle and is provided with a screw opening matched with the fastening bolt 5, the setting of the connecting frame 6 and the edge protrusions 7 can prevent the bolt from causing abrasion to the edge of the slot when the side edge waterstop 1 is pulled, thereby protecting the slot, the setting of the rubber block 8 and the tear opening can provide a space for the fastening bolt 5 to buffer the pulling force on the two sides, prevent the pulling from causing cracks, and the wire mesh 9 can effectively improve the anti-cracking performance of the side edge waterstop 1.

[0074] Please refer to the accompanying drawings Figures 1-7 The application provides a use method of a telescopic anti-cracking waterstop, which comprises the following steps:

[0075] S1, the side edge waterstop 1, the folding telescopic belt 3 and the middle waterstop 2 are integrally formed, when the waterstop is installed, the folding telescopic belt 3 is located in the cavity, the side edge waterstop 1 and the middle waterstop 2 are placed in the deformation joint in a concave structure, at this time, the middle waterstop 2 is located in the middle of the deformation joint, then the fastening bolt 5 is used to fix the side edge waterstop 1, the panel 4 and the structure, and the fastening bolt 5 is arranged in the slot and the screw opening in the middle of the rubber block 8;

[0076] S2, when the side edge waterstop 1 and the middle waterstop 2 are placed in the deformation joint in a concave structure, the first spring 14 is elastically arranged to control the connecting frame 12 to be pressed downward, so that the roller 11 presses the side edge waterstop 1 to keep the concave structure,

[0077] S3, while the connecting frame 12 is pressed downward, the telescopic plate 24, the outer frame plate 25 and the second spring 26 are arranged to control the limiting frame 21 to limit the middle waterstop 2, so that the middle waterstop 2 is consistent with the side edge waterstop 1,

[0078] S4, when the structures on both sides of the deformation joint are deformed too much, the side edge waterstop 1 is subjected to pulling force on both sides, thereby controlling the folding telescopic belt 3 to come out of the cavity to control the expansion and contraction of the waterstop,

[0079] S5, when the side edge waterstop 1 is subjected to pulling force on both sides, the fastening bolt 5 can be buffered in the tear opening integrally formed with the two sides in the interior of the rubber block 8 to protect the slot from being cracked,

[0080] S6, at this time, through the action of the first spring 14, the second spring 26 and the torsion spring 28, the control roller 11 and the limiting frame 21 can maximize the side edge water stop belt 1, the folding telescopic belt 3 and the middle water stop belt 2 to keep the concave structure.

[0081] The implementation principle of the present application is that: first, when the water stop belt is installed, the folding telescopic belt 3 is located in the cavity on both sides of the middle water stop belt 2, and the side edge water stop belt 1 and the middle water stop belt 2 are placed in the deformation joint in a concave structure, at this time the middle water stop belt 2 is located in the middle of the deformation joint, then the side edge water stop belt 1, the panel 4 and the structure are fixed by rotating the fastening bolt 5, when the side edge water stop belt 1 and the middle water stop belt 2 are placed in the deformation joint in a concave structure, at this time the control connecting frame 12 is pressed downward by the elastic action of the first spring 14, so that the roller 11 presses the side edge water stop belt 1 to keep the concave structure, at the same time the connecting frame 12 is pressed downward, the telescopic plate 24 is elastically telescopic in the outer frame plate 25 by the action of the second spring 26, the limiting frame 21 limits the middle water stop belt 2 by the action of the torsion spring 28, so that the middle water stop belt 2 keeps consistent with the side edge water stop belt 1, when the structure on both sides of the deformation joint deforms too much, at this time the side edge water stop belt 1 will be subjected to tension on both sides, and the folding telescopic belt 3 will be controlled to stretch out of the cavity to some extent, so as to control the telescopic effect of the water stop belt, and the limiting frame 21 limits the middle water stop belt 2, so that it keeps consistent with the side edge water stop belt 1, when the side edge water stop belt 1 is subjected to tension on both sides, the bolt can be buffered in the tear opening integrally formed in the rubber block 8 on both sides, so as to protect the slot and avoid the slot from being torn open.

[0082] The present application has the effects that: through the telescopic structure, when the displacement occurs on both sides of the deformation joint, the folding telescopic belt deforms and is pulled outwards to be flat, so as to achieve the effect of resisting tearing, thereby effectively ensuring the telescopic property of the water stop belt, prolonging the service life of the water stop belt, and ensuring the water stopping effect of the water stop belt. Through the cooperation of the first spring, the second spring and the torsion spring, the roller positions the side edge water stop belt, the telescopic plate controls the limiting frame to limit the middle water stop belt, the middle water stop belt keeps consistent with the side edge water stop belt in a concave structure, so that the water stop belt is closely connected with the deformation joint through the concave structure, thereby improving the water stopping effect of the water stop belt. Through the anti-tearing structure, the connecting frame and the edge protrusion can protect the edge of the slot when the side edge water stop belt is pulled, and the rubber block and the tear opening can provide a space for the fastening bolt to buffer the tension on both sides and prevent tearing.

[0083] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A retractable, anti-tear waterstop comprising: The utility model relates to a waterstop, side waterstop, telescopic structure, shaping structure and anti-tearing structure, characterized in that: The side waterstop is arranged on both sides of the middle waterstop; The telescopic structure is arranged between the middle waterstop and the side waterstop to prevent the middle waterstop and the side waterstop from being pulled apart; The anti-tearing structure is detachably arranged at both ends of the side waterstop; The shaping structure is arranged between the ends of the middle waterstop and the corresponding anti-tearing structure; The shaping structure is arranged on the side waterstop to press the side waterstop downward to form a concave structure; The telescopic structure includes a folding telescopic belt, and the middle waterstop is provided with cavities on both sides, and the folding telescopic belt is connected to the upper and lower sides of the cavities, and the other end of the folding telescopic belt is connected to the side waterstop, and the side waterstop, the folding telescopic belt and the middle waterstop are integrated.

2. The expandable anti-tear waterstop of claim 1, wherein, The anti-tearing structure includes a panel, a connecting frame and a fastening bolt, one end of the side waterstop is detachably provided with the panel, a slot is arranged in the side waterstop, the connecting frame is mounted in the slot, and the fastening bolt is movably inserted into the panel.

3. The expandable anti-tear waterstop of claim 2, wherein, The connecting frame is provided with edge protrusions at the upper and lower edges, and the edge protrusions are attached to the outer surface of the side waterstop, and the side waterstop is provided with a wire mesh, which is integrally formed with the side waterstop.

4. The expandable anti-tear waterstop of claim 2, wherein, The connecting frame is provided with a rubber block, and the rubber block is integrally formed with tearing openings on both sides and a screw hole in the middle for the fastening bolt.

5. The expandable anti-tear waterstop of claim 1, wherein, The shaping structure includes a roller, a connecting bracket and a connecting rod, the number of connecting rods is two, the upper ends of the connecting rods are fixedly connected to the outer wall of the panel of the anti-tearing structure, the roller is slidably arranged above the side waterstop, the connecting bracket is rotatably connected to the outer side of the roller, and the upper ends of the connecting bracket are slidably connected to the connecting rods.

6. The expandable anti-tear waterstop of claim 5, wherein, The connecting rod is provided with a first spring.

7. The expandable anti-tear waterstop of claim 5, wherein, The shaping structure further includes a limiting frame, a second connecting seat, an expansion plate and an outer frame plate, two groups of limiting frames are symmetrically and fixedly arranged on the middle waterstop, the second connecting seat is fixedly arranged at the top of the limiting frame, the expansion plate is rotatably connected to the second connecting seat, the outer frame plate is slidably connected to the expansion plate, one end of the outer frame plate is fixedly provided with a shaft, and the outer wall of the connecting bracket is fixedly provided with a first connecting seat.

8. The expandable anti-tear waterstop of claim 7, wherein, The shaft is rotatably arranged on the first connecting seat.

9. A method of using a retractable, anti-tear waterstop, characterized by, The shaft is provided with a torsion spring, one end of the torsion spring is fixedly connected to the first connecting seat, the other end is connected to the outer wall of the shaft, the inner part of the outer frame plate is further provided with a second spring, and the two ends of the second spring are fixedly connected to the expansion plate and the outer frame plate. The method includes the following steps: S1, the side waterstop and the middle waterstop are placed in the deformation joint in a concave structure, at this time the middle waterstop is located in the middle of the deformation joint, then the side waterstop, the panel and the structure are fixed by rotating the fastening bolt, and the fastening bolt passes through the slot and the screw hole in the middle of the rubber block. S2, when the side waterstop belt and the middle waterstop belt are placed in the deformation joint in a concave structure, the control connecting frame is extruded downward by the elastic effect of the first spring, so that the roller presses the side waterstop belt, so that it remains in a concave structure; S3, while the connecting frame is extruded downward, the control limiting frame limits the middle waterstop belt by the effect of the telescopic plate, the outer frame plate and the second spring, so that the middle waterstop belt is consistent with the side waterstop belt; S4, when the structure on both sides of the deformation joint is deformed too much, the side waterstop belt is subjected to tension on both sides, and then the folding telescopic belt is controlled to come out of the cavity, playing a role in controlling the expansion of the waterstop belt; S5, when the side waterstop belt is subjected to tension on both sides, the bolt can be buffered in the tear opening integrally formed on both sides of the rubber block, playing a role in protecting the slot, avoiding the slot from cracking; S6, at this time, the roller and the limiting frame can keep the side waterstop belt, the folding telescopic belt and the middle waterstop belt in a concave structure to the maximum extent by the effect of the first spring, the second spring and the torsion spring.

Images