A water-stop device for corners of cast-in-place concrete exterior walls and its installation method

Abstract

This invention discloses a corner water-stop device for cast-in-place concrete exterior walls, installed on a steel cage before wall pouring. It includes a water-stop steel plate integrally bent into shape, a water-swellable rubber strip placed on the water-facing surface of the water-stop steel plate, an L-shaped reinforcing bar for limiting the position of the water-swellable rubber strip, connecting reinforcing bars welded to the L-shaped reinforcing bar and tied to the steel cage, and a positioning component for achieving a stable connection between the water-stop steel plate and the steel cage. This corner water-stop device and installation method for cast-in-place concrete exterior walls effectively ensures water-stopping performance by setting a prefabricated water-stop steel plate at the corner of the wall, using a single-piece bending technique with no welded seams at the corner. The addition of a water-swellable rubber strip provides double water-stopping protection, increasing reliability. Furthermore, the tight bonding between the water-stop steel plate and the concrete enhances the overall strength of the concrete structure, helping to prevent cracking or damage at the wall corner due to stress concentration.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a corner water-stopping device for cast-in-place concrete exterior walls and its installation method. Background Technology

[0002] Due to the special structural features of concrete exterior walls, space is limited at corners, making it difficult to compact the concrete. There are also potential quality issues with the positioning and welding of the waterstop steel plate. Furthermore, corners are stress concentration areas. If only concrete is used for pouring, the wall is prone to cracking or damage due to stress concentration. Therefore, we propose a corner waterstop device for cast-in-place concrete exterior walls and its installation method. Summary of the Invention

[0003] The purpose of this invention is to provide a corner water-stopping device and installation method for cast-in-place concrete exterior walls to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a corner water-stopping device for cast-in-place concrete exterior walls, installed on a steel cage before wall pouring, comprising a water-stopping steel plate integrally bent into shape, a water-swellable rubber strip disposed on the water-facing surface of the water-stopping steel plate, an L-shaped reinforcing bar for limiting the position of the water-swellable rubber strip, connecting reinforcing bars welded to the L-shaped reinforcing bar and tied to the steel cage, a positioning component for achieving a stable connection between the water-stopping steel plate and the steel cage, and a linkage component for achieving linkage between multiple positioning components; the positioning component... The system includes positioning ribs bound to the steel cage, a slider slidably mounted on the positioning ribs, a fixing rod fixedly connected to the slider, a clamping block fixed to the end of the fixing rod, a connecting shaft rotatably mounted inside the positioning ribs, and threaded rods and a turntable respectively fixed to both ends of the connecting shaft. The threaded rod is also threadedly connected to the slider. The linkage assembly includes a bar rod for linkage, a first bearing mounted on the bar rod, a plug shaft inserted into the inner ring of the first bearing, a baffle fixed on the plug shaft, and a second bearing for movable connection between the baffle and the turntable.

[0005] Preferably, the positioning assembly further includes a ring gear, a reversing gear, and a connecting seat. The ring gear is fixedly installed on the end face of the threaded rod, the reversing gear is rotatably mounted on the connecting seat, and the connecting seat is fixedly installed on the side wall of the inner cavity of the positioning rib. The reversing gear meshes with the ring gear. There are two of each of the threaded rod, the reversing gear, and the ring gear, wherein the two ring gears are fixedly connected to the two threaded rods respectively, and the two reversing gears mesh with each other.

[0006] Preferably, the linkage assembly further includes a limiting block, a guide strip, a connecting ring, an auxiliary block, an auxiliary spring, an auxiliary rod, a central shaft, a disc-shaped shaft, and a connecting rod. The limiting block is slidably disposed on the insert shaft, the guide strip is fixedly installed on the surface of the insert shaft, the connecting ring is fixedly connected to the disc-shaped shaft through the connecting rod, the auxiliary block is fixedly installed on the limiting block and slidably connected to the insert shaft, the two ends of the auxiliary spring are respectively fixedly connected to the insert shaft and the auxiliary block, the two ends of the auxiliary rod are respectively movably connected to the limiting block and the central shaft, the central shaft and the disc-shaped shaft are both rotatably disposed inside the insert shaft, and the central shaft and the disc-shaped shaft are fixedly connected.

[0007] Preferably, the clamping block contacts the water-stop steel plate to form a contact surface, and an anti-slip pad is provided on the contact surface.

[0008] Preferably, the water-swellable rubber strip is made by mixing water-soluble polymer material with rubber, and the water-swellable rubber strip has an L-shaped design.

[0009] Preferably, the baffle has an arc-shaped groove for the connecting rod to pass through.

[0010] Preferably, the auxiliary rod is located in the cavity inside the insert shaft.

[0011] Preferably, the inner ring of the first bearing is provided with a groove that cooperates with the guide strip, and the inner ring of the first bearing is also provided with an insertion hole that cooperates with the limiting block.

[0012] Preferably, the centerline of the central shaft coincides with the centerline of the disc-shaped shaft.

[0013] Preferably, a method for installing a corner waterstop device for cast-in-place concrete exterior walls includes the following steps:

[0014] S1: First, use steel wire to tie multiple positioning ribs to the steel cage, then place the water-stop steel plate between the two clamps, and then rotate the connecting ring. With the connection of the connecting rod, the disc shaft and the central shaft rotate with it.

[0015] S2: Since the two ends of the auxiliary rod are movably connected to the limiting block and the central shaft respectively, as the central shaft rotates, it will pull the limiting block to slide into the insert shaft. Then, the guide strip on the insert shaft will be used to connect to the first bearing on the strip rod. The connecting ring will be released, and under the action of the auxiliary spring, the limiting block and the auxiliary block will be pushed to slide outward of the insert shaft, so that the limiting block is inserted into the inner ring of the first bearing to connect the strip rod to the insert shaft.

[0016] S3: Then rotate the turntable. Because the baffle fixed to the insert shaft is connected to the turntable by the second bearing, and under the connection of the strip rod and the first bearing, multiple turntables will rotate synchronously. The turntable will drive the connecting shaft and one of the threaded rods to rotate. The clamping block, the fixing rod and the slider are fixed as a whole. After the threaded rod rotates, it will push the slider to slide on the positioning rib, thereby causing the clamping block to slide towards the waterstop steel plate. Under the action of the ring gear and the reversing gear, the other threaded rod rotates in the opposite direction, causing the other clamping block and the slider to slide towards the waterstop steel plate synchronously, so as to clamp and fix the position of the waterstop steel plate on the positioning rib.

[0017] S4: Then, place the water-swellable rubber strip on the water-facing surface of the water-stop steel plate, and clamp the water-swellable rubber strip with two L-shaped steel bars. Then, use steel wire to tie the connecting bars welded to the L-shaped steel bars to the steel cage to install and fix the whole device on the steel cage.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention involves installing a water-stop steel plate at the corner of a wall. The water-stop steel plate is prefabricated and bent as a single piece, with no welding seams at the corner, effectively ensuring the water-stopping effect. At the same time, a water-swellable rubber strip is added for double water-stopping insurance, which is more reliable. Furthermore, after the water-stop steel plate is tightly bonded to the concrete, it can enhance the overall strength of the concrete structure and help prevent cracking or damage at the corner of the wall due to stress concentration.

[0020] 2. In addition, the present invention provides a positioning component to restrict the position of the waterstop steel plate on the steel cage before pouring, which can prevent the waterstop steel plate from shifting during concrete pouring, ensure the stability of the entire wall after pouring, and ensure the waterstop performance of the waterstop steel plate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is an exploded view of the L-shaped steel bar structure of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of the positioning rib structure of the present invention;

[0024] Figure 4 This is an exploded view of the reversing gear structure of the present invention;

[0025] Figure 5 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 6 This is an exploded view of the structure at the second bearing of the present invention;

[0027] Figure 7 This is a cross-sectional schematic diagram of the insert shaft structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the bar structure of the present invention.

[0029] In the diagram: 1. Water-stop steel plate; 2. L-shaped steel bar; 21. Connecting reinforcing bar; 3. Water-swellable rubber strip; 4. Steel cage; 5. Positioning assembly; 51. Positioning reinforcing bar; 52. Clamping block; 53. Fixing rod; 54. Sliding block; 55. Connecting shaft; 56. Threaded rod; 57. Ring gear; 58. Reversing gear; 59. Connecting seat; 510. Turntable; 6. Linkage assembly; 61. Strip rod; 62. First bearing; 63. Insert shaft; 64. Limiting block; 65. Guide bar; 66. Baffle; 67. Connecting ring; 68. Second bearing; 69. Auxiliary block; 610. Auxiliary spring; 611. Auxiliary rod; 612. Central shaft; 613. Disc shaft; 614. Connecting rod. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-8 This invention provides a technical solution: a corner water-stop device for cast-in-place concrete exterior walls, installed on a steel cage 4 before wall pouring, comprising a water-stop steel plate 1 integrally bent into shape, a water-swellable rubber strip 3 installed on the water-facing surface of the water-stop steel plate 1, an L-shaped steel bar 2 for limiting the position of the water-swellable rubber strip 3, a connecting bar 21 welded to the L-shaped steel bar 2 and tied to the steel cage 4, a positioning component 5 for achieving a stable connection between the water-stop steel plate 1 and the steel cage 4, and a linkage component 6 for achieving linkage between multiple positioning components 5; the water-swellable rubber strip 3 is made by mixing water-soluble polymer material with rubber, and the shape of the water-swellable rubber strip 3 is L-shaped. Because the expanded rubber strip can tightly fit the structural surface, it has excellent sealing and waterproofing functions, and is suitable for waterproofing various joints, cracks and holes, thereby effectively improving the water-stopping performance of the overall device.

[0032] Positioning assembly 5 includes positioning ribs 51 bound to the steel cage 4, a slider 54 slidably disposed on the positioning ribs 51, a fixing rod 53 fixedly connected to the slider 54, a clamping block 52 fixed to the end of the fixing rod 53, a connecting shaft 55 rotatably disposed inside the positioning ribs 51, and threaded rods 56 and a turntable 510 respectively fixed to both ends of the connecting shaft 55. The threaded rod 56 is also threadedly connected to the slider 54. Positioning assembly 5 also includes a ring gear 57, a reversing gear 58, and a connecting seat 59. The ring gear 57 is fixedly mounted on the end face of the threaded rod 56, and the reversing gear 58... Wheel 58 is rotatably mounted on connecting seat 59, which is fixedly installed on the side wall of the inner cavity of positioning rib 51. Reversing gear 58 meshes with ring gear 57. There are two threaded rods 56, two reversing gears 58, and two ring gears 57. The two ring gears 57 are fixedly connected to the two threaded rods 56 respectively, and the two reversing gears 58 mesh with each other. Clamping block 52 contacts waterstop steel plate 1 to form a contact surface. Anti-slip pads are provided on the contact surface to ensure the friction between clamping block 52 and waterstop steel plate 1, thereby improving its clamping and fixing effect.

[0033] The linkage assembly 6 includes a bar-shaped rod 61 for linkage, a first bearing 62 disposed on the bar-shaped rod 61, a shaft 63 inserted into the inner ring of the first bearing 62, a baffle 66 fixed on the shaft 63, and a second bearing 68 for movable connection between the baffle 66 and the turntable 510. The linkage assembly 6 also includes a limiting block 64, a guide bar 65, a connecting ring 67, an auxiliary block 69, an auxiliary spring 610, an auxiliary rod 611, a central shaft 612, a disc-shaped shaft 613, and a connecting rod 614. The limiting block 64 is slidably disposed on the shaft 63, the guide bar 65 is fixedly installed on the surface of the shaft 63, the connecting ring 67 is fixedly connected to the disc-shaped shaft 613 through the connecting rod 614, and the auxiliary block 69 is fixedly installed on the limiting block 64. The auxiliary spring 610 is slidably connected to the insert shaft 63 on the block 64. The two ends of the auxiliary spring 610 are fixedly connected to the insert shaft 63 and the auxiliary block 69, respectively. The two ends of the auxiliary rod 611 are movably connected to the limiting block 64 and the central shaft 612, respectively. The central shaft 612 and the disc shaft 613 are both rotatably disposed inside the insert shaft 63, and the central shaft 612 and the disc shaft 613 are fixedly connected. The baffle 66 has an arc-shaped groove for the connecting rod 614 to pass through. The auxiliary rod 611 is located in the cavity inside the insert shaft 63. The inner ring of the first bearing 62 has a sliding groove that cooperates with the guide strip 65, and the inner ring of the first bearing 62 also has an insertion hole that cooperates with the limiting block 64. The axis of the central shaft 612 coincides with the axis of the disc shaft 613.

[0034] A method for installing a corner water-stop device for cast-in-place concrete exterior walls includes the following steps:

[0035] S1: First, use steel wire to tie multiple positioning ribs 51 to the steel cage 4, then place the water-stop steel plate 1 between the two clamps 52, and then rotate the connecting ring 67. Under the connection of the connecting rod 614, the disc shaft 613 and the central shaft 612 rotate with it.

[0036] S2: Since the two ends of the auxiliary rod 611 are movably connected to the limiting block 64 and the central shaft 612 respectively, as the central shaft 612 rotates, it will pull the limiting block 64 to slide into the insertion shaft 63. Then, the guide strip 65 on the insertion shaft 63 is sleeved on the first bearing 62 on the strip rod 61. The connecting ring 67 is released. Under the action of the auxiliary spring 610, the limiting block 64 and the auxiliary block 69 are pushed to slide outward of the insertion shaft 63, so that the limiting block 64 is inserted into the inner ring of the first bearing 62, so as to connect the strip rod 61 to the insertion shaft 63.

[0037] S3: Then rotate the turntable 510. Because the baffle 66, which is fixedly connected to the insert shaft 63, is movably connected to the turntable 510 via the second bearing 68, and under the connection of the strip rod 61 and the first bearing 62, multiple turntables 510 will rotate synchronously. The turntable 510 will drive the connecting shaft 55 and one of the threaded rods 56 to rotate. The clamping block 52, the fixing rod 53 and the slider 54 are fixedly set as a whole. After the threaded rod 56 rotates, it will push the slider 54 to slide on the positioning rib 51, thereby causing the clamping block 52 to slide towards the waterstop steel plate 1. Under the action of the ring gear 57 and the reversing gear 58, the other threaded rod 56 rotates in the opposite direction, causing the other clamping block 52 and the slider 54 to slide towards the waterstop steel plate 1 synchronously, so as to clamp and fix the position of the waterstop steel plate 1 on the positioning rib 51.

[0038] S4: Then, the water-swellable rubber strip 3 is placed on the water-facing surface of the water-stop steel plate 1, and the water-swellable rubber strip 3 is clamped by two L-shaped steel bars 2. Then, the connecting bars 21 welded to the L-shaped steel bars 2 are tied to the steel cage 4 with steel wire to install and fix the whole device on the steel cage 4.

[0039] Working principle: When the overall device is connected to the steel cage 4, multiple positioning ribs 51 are tied to the steel cage 4 with steel wires. Then, the water-stop steel plate 1 is placed between two clamping blocks 52. The clamping blocks 52, fixing rods 53, and sliders 54 are integrally fixedly connected. The threaded rod 56 is threadedly connected to the slider 54. Between the two threaded rods 56, there is a ring gear 57, a reversing gear 58, and a connecting seat 59. The ring gear 57 is fixed to the threaded rod 56 and also meshes with the reversing gear 58. The two reversing gears 58, which are rotatably set on the two connecting seats 59, are connected between the two connecting seats 59. The two threaded rods 56 mesh with each other, so their rotation directions are opposite, causing the two clamping blocks 52 to perform relative mirror sliding motion, thereby clamping and fixing the waterstop steel plate 1 onto the positioning rib 51. At the same time, one of the threaded rods 56 is also fixedly connected to the connecting shaft 55. Therefore, after the connecting shaft 55 rotates, it can drive the clamping block 52 to slide towards the waterstop steel plate 1. The turntable 510 fixed on the connecting shaft 55 is movably connected to the connecting ring 67 through the second bearing 68. Then, rotating the connecting ring 67, the disc-shaped shaft 613 fixedly connected to the connecting ring 67 through the connecting rod 614, and the center fixedly connected to the disc-shaped shaft 613... The central shaft 612 rotates with the connecting ring 67. Then, the central shaft 612 pulls the limiting block 64 via the auxiliary rod 611. At this time, the guide bar 65 on the insert shaft 63 is used to attach the first bearing 62 on the strip rod 61 to the insert shaft 63. The connecting ring 67 is then released, so that under the action of the auxiliary spring 610, the limiting block 64 is pushed into the inner ring of the first bearing 62, completing the connection between the strip rod 61 and the first bearing 62. This process is repeated to connect the other first bearings 62 on the strip rod 61 to other insert shafts 63. At this point, after rotating a single turntable 510, the remaining turntables 510 will move along the strip rod 61. Under the connection of the rod 61, they rotate synchronously, thereby driving the connecting shaft 55 inside the multiple positioning ribs 51 to rotate, so that multiple sets of clamping blocks 52 synchronously clamp the water-stop steel plate 1 to fix the position of the water-stop steel plate 1; then the water-swellable rubber strip 3 is placed on the water-facing surface of the water-stop steel plate 1, and then the water-swellable rubber strip 3 is clamped by two L-shaped steel bars 2. Then the connecting ribs 21 welded to the L-shaped steel bars 2 are tied to the steel cage 4 with steel wire. Finally, the entire steel cage 4 is wrapped with the casting template and concrete is poured. After the concrete sets, a wall with water-stop function is formed.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corner water-stopping device for cast-in-place concrete exterior walls, installed on a steel cage (4) before the wall is poured, characterized in that: The system includes a water-stop steel plate (1) formed by bending a steel plate in one piece, a water-swellable rubber strip (3) set on the water-facing surface of the water-stop steel plate (1), an L-shaped steel bar (2) used to limit the position of the water-swellable rubber strip (3), a connecting bar (21) welded to the L-shaped steel bar (2) and tied to the steel cage (4), a positioning component (5) used to achieve a stable connection between the water-stop steel plate (1) and the steel cage (4), and a linkage component (6) for achieving the linkage between multiple positioning components (5). The positioning component (5) includes a positioning rib (51) tied to the steel cage (4), a slider (54) slidably disposed on the positioning rib (51), a fixing rod (53) fixedly connected to the slider (54), a clamp (52) fixed to the end of the fixing rod (53), a connecting shaft (55) rotatably disposed inside the positioning rib (51), and a threaded rod (56) and a turntable (510) respectively fixed to both ends of the connecting shaft (55). The threaded rod (56) is also threadedly connected to the slider (54). The linkage assembly (6) includes a linkage bar (61), a first bearing (62) disposed on the bar (61), a plug shaft (63) inserted into the inner ring of the first bearing (62), a baffle (66) fixed on the plug shaft (63), and a second bearing (68) that realizes the movable connection between the baffle (66) and the turntable (510). The positioning component (5) further includes a ring gear (57), a reversing gear (58), and a connecting seat (59). The ring gear (57) is fixedly installed on the end face of the threaded rod (56). The reversing gear (58) is rotatably mounted on the connecting seat (59). The connecting seat (59) is fixedly installed on the side wall of the inner cavity of the positioning rib (51). The reversing gear (58) meshes with the ring gear (57). There are two of each of the threaded rod (56), the reversing gear (58), and the ring gear (57). The two ring gears (57) are fixedly connected to the two threaded rods (56) respectively, and the two reversing gears (58) mesh with each other. The linkage assembly (6) further includes a limiting block (64), a guide bar (65), a connecting ring (67), an auxiliary block (69), an auxiliary spring (610), an auxiliary rod (611), a central shaft (612), a disc-shaped shaft (613), and a connecting rod (614). The limiting block (64) is slidably disposed on the insert shaft (63), the guide bar (65) is fixedly installed on the surface of the insert shaft (63), and the connecting ring (67) is fixedly connected to the disc-shaped shaft (613) through the connecting rod (614). Next, the auxiliary block (69) is fixedly installed on the limiting block (64) and slidably connected to the insert shaft (63). The two ends of the auxiliary spring (610) are fixedly connected to the insert shaft (63) and the auxiliary block (69) respectively. The two ends of the auxiliary rod (611) are movably connected to the limiting block (64) and the central shaft (612) respectively. The central shaft (612) and the disc shaft (613) are both rotatably arranged inside the insert shaft (63), and the central shaft (612) and the disc shaft (613) are fixedly connected.

2. The corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The clamping block (52) contacts the water-stop steel plate (1) to form a contact surface, and an anti-slip pad is provided on the contact surface.

3. A corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The water-swellable rubber strip (3) is made by mixing water-soluble polymer material with rubber, and the water-swellable rubber strip (3) has an L-shaped design.

4. A corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The baffle (66) has an arc-shaped groove for the connecting rod (614) to pass through.

5. A corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The auxiliary rod (611) is located in the cavity inside the insert shaft (63).

6. A corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The inner ring of the first bearing (62) is provided with a groove that cooperates with the guide bar (65), and the inner ring of the first bearing (62) is also provided with an insertion hole that cooperates with the limiting block (64).

7. A corner water-stopping device for cast-in-place concrete exterior walls according to claim 1, characterized in that: The centerline of the central axis (612) coincides with the centerline of the disc-shaped axis (613).

8. An installation method for a corner water-stopping device for cast-in-place concrete exterior walls as described in claim 1, characterized in that, Includes the following steps: S1: First, use steel wire to tie multiple positioning ribs (51) to the steel cage (4), then place the water-stop steel plate (1) between the two clamps (52), and then rotate the connecting ring (67). Under the connection of the connecting rod (614), the disc shaft (613) and the central shaft (612) rotate accordingly. S2: Since the two ends of the auxiliary rod (611) are movably connected to the limiting block (64) and the central shaft (612) respectively, as the central shaft (612) rotates, it will pull the limiting block (64) to slide into the insert shaft (63). Then, the guide strip (65) on the insert shaft (63) is used to connect the first bearing (62) on the bar rod (61). The connecting ring (67) is released. Under the action of the auxiliary spring (610), the limiting block (64) and the auxiliary block (69) are pushed to slide outward of the insert shaft (63), so that the limiting block (64) is inserted into the inner ring of the first bearing (62) to connect the bar rod (61) to the insert shaft (63). S3: Then rotate the turntable (510). Because the baffle (66) fixedly connected to the insert shaft (63) is movably connected to the turntable (510) via the second bearing (68), and under the connection of the strip rod (61) and the first bearing (62), multiple turntables (510) will rotate synchronously. The turntable (510) will drive the connecting shaft (55) and one of the threaded rods (56) to rotate, while the clamping block (52), the fixing rod (53) and the slider (54) are fixed as a whole. The setup is such that after the threaded rod (56) rotates, it will push the slider (54) to slide on the positioning rib (51), thereby causing the clamping block (52) to slide towards the waterstop steel plate (1). Meanwhile, the other threaded rod (56) rotates in the opposite direction under the action of the ring gear (57) and the reversing gear (58), causing the other clamping block (52) and the slider (54) to slide towards the waterstop steel plate (1) simultaneously, so as to clamp and fix the position of the waterstop steel plate (1) on the positioning rib (51). S4: Then, the water-swellable rubber strip (3) is placed on the water-facing surface of the water-stop steel plate (1), and the water-swellable rubber strip (3) is clamped by two L-shaped steel bars (2). Then, the connecting bar (21) welded to the L-shaped steel bar (2) is tied to the steel cage (4) with steel wire to install and fix the whole device on the steel cage (4).

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